US2006194023A1PendingUtilityA1

Algae resistant shingle

42
Individually held — no corporate assignee on recordPriority: Feb 25, 2005Filed: Feb 25, 2005Published: Aug 31, 2006
Est. expiryFeb 25, 2025(expired)· nominal 20-yr term from priority
Inventors:Yihsien H. Teng
E04D 2001/005E04D 1/26E04D 13/002Y10T428/24372
42
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

An algae resistant asphalt-based roofing material including a portion that is normally exposed when the roofing material is installed on a roof. The roofing material comprises a substrate coated with an asphalt coating. The asphalt coating includes an upper surface that is positioned above the substrate when the roofing material is installed on the roof. A surface layer of granules adheres to the asphalt coating. An application of metallic particles is applied to the upper surface of the asphalt coating. The metallic particles contain a component that inhibits the growth of algae. The metallic particles are applied such that greater than fifty percent of the metallic particles are covered by the asphalt coating, or by the granules, or by both the asphalt coating and the granules. The covering of the metallic particles provides sustained algae resistance at a low cost and prevents premature loss of the metallic particles.

Claims

exact text as granted — not AI-modified
1 . An algae resistant asphalt-based roofing material including a portion that is normally exposed when the roofing material is installed on a roof, the exposed portion of the roofing material comprising: 
 a substrate coated with an asphalt coating, the asphalt coating including an upper surface that is positioned above the substrate when the roofing material is installed on the roof,    a surface layer of granules adhered to the asphalt coating; and    an application of metallic particles applied to the upper surface of the asphalt coating, the metallic particles having a component that inhibits the growth of algae, the metallic particles being applied such that greater than fifty percent of the metallic particles are covered by the asphalt coating or the granules, or both.    
     
     
         2 . The roofing material of  claim 1  wherein the metallic particles are applied such that greater than seventy percent of the metallic particles are covered by the asphalt coating or the granules, or both.  
     
     
         3 . The roofing material of  claim 1  wherein the metallic particles are applied such that greater than ninety percent of the metallic particles are covered by the asphalt coating or the granules, or both.  
     
     
         4 . The roofing material of  claim 1  wherein the metallic particles are pre-applied to the asphalt coating prior to the application of the granules.  
     
     
         5 . The roofing material of  claim 1  wherein greater than ninety percent of the metallic particles have an aspect ratio of less than or equal to 1.5.  
     
     
         6 . The roofing material of  claim 1  wherein greater than ninety percent of the metallic particles have an aspect ratio of less than or equal to 1.3.  
     
     
         7 . The roofing material of  claim 1  wherein the size of the largest dimension of the individual metallic particles is within the range of from about 0.05 mm to about 1.0 mm.  
     
     
         8 . The roofing material of  claim 1  wherein the size of the largest dimension of the individual metallic particles is within the range of from about 0.1 mm to about 0.5 mm.  
     
     
         9 . The roofing material of  claim 7  wherein greater than ninety percent of the metallic particles have an aspect ratio of less than or equal to 1.5.  
     
     
         10 . The roofing material of  claim 1  wherein the metallic particles are applied to the roofing material at a rate that provides the algae inhibiting component of the metallic particles in an amount within the range of from about 0.05 pounds per square to about 0.29 pounds per square.  
     
     
         11 . The roofing material of  claim 10  wherein the leach rate of the algae inhibiting component of the metallic particles is within the range of from about 0.3 parts per million to about 1.0 parts per million in dew runoff from the roofing material.  
     
     
         12 . The roofing material of  claim 1  wherein algae inhibiting component of the metallic particles consists essentially of copper.  
     
     
         13 . The roofing material of  claim 1  wherein the algae inhibiting component of the metallic particles consists essentially of a copper alloy.  
     
     
         14 . An algae resistant asphalt-based roofing material including a portion that is normally exposed when the roofing material is installed on a roof, exposed portion of the roofing material comprising: 
 a substrate coated with an asphalt coating, the asphalt coating including an upper surface that is positioned above the substrate when the roofing material is installed on the roof;    an application of metallic particles applied to the upper surface of the asphalt coating, the metallic particles having a component that inhibits the growth of algae, wherein greater than ninety percent of the metallic particles have an aspect ratio of less than or equal to 1.5; and    a surface layer of granules adhered to the asphalt coating.    
     
     
         15 . The roofing material of  claim 14  wherein the metallic particles are pre-applied to the asphalt coating prior to the application of the granules.  
     
     
         16 . The roofing material of  claim 14  wherein greater than ninety percent of the metallic particles have an aspect ratio of less than or equal to 1.3.  
     
     
         17 . The roofing material of  claim 14  wherein the size of the largest dimension of the individual metallic particles is within the range of from about 0.05 mm to about 1.0 mm.  
     
     
         18 . The roofing material of  claim 14  wherein the size of the largest dimension of the individual metallic particles is within the range of from about 0.1 mm to about 0.5 mm.  
     
     
         19 . The roofing material of  claim 14  wherein the metallic particles are applied to the roofing material at a rate that provides the algae inhibiting component of the metallic particles in an amount within the range of from about 0.05 pounds per square to about 0.29 pounds per square.  
     
     
         20 . The roofing material of  claim 19  wherein the leach rate of the algae inhibiting component of the metallic particles is within the range of from about 0.3 parts per million to about 1.0 parts per million in dew runoff from the roofing material.  
     
     
         21 . A microorganism resistant asphalt-based roofing material including a portion that is normally exposed when the roofing material is installed on a roof, the exposed portion of the roofing material comprising: 
 a substrate coated with an asphalt coating, the asphalt coating including an upper surface that is positioned above the substrate when the roofing material is installed on the roof;    an application of metallic particles applied to the upper surface of the asphalt coating, the metallic particles having a component that inhibits the growth of algae, wherein the metallic particles are applied to the roofing material at a rate that provides the algae inhibiting component of the metallic particles in an amount within the range of from about 0.05 pounds per square to about 0.29 pounds per square.    a surface layer of granules adhered to the asphalt coating.    
     
     
         22 . The roofing material of  claim 21  wherein the leach rate of the algae inhibiting component of the metallic particles is within the range of from about 0.3 parts per million to about 1.0 parts per million in dew runoff from the roofing material.  
     
     
         23 . The roofing material of  claim 21  wherein the metallic particles are pre-applied to the asphalt coating prior to the application of the granules.  
     
     
         24 . The roofing material of  claim 21  wherein the metallic particles are applied to the roofing material at a rate that provides the algae inhibiting component of the metallic particles in an amount within the range of from about 0.10 pounds per square to about 0.20 pounds per square.  
     
     
         25 . The roofing material of  claim 21  wherein the metallic particles are applied such that greater than fifty percent of the metallic particles are covered by the asphalt coating or the granules, or both.  
     
     
         26 . The roofing material of  claim 25  wherein greater than ninety percent of the metallic particles have an aspect ratio of less than or equal to 1.5.  
     
     
         27 . The roofing material of  claim 25  wherein the size of the largest dimension of the individual metallic particles is within the range of from about 0.05 mm to about 1.0 mm.  
     
     
         28 . The roofing material of  claim 27  wherein greater than ninety percent of the metallic particles have an aspect ratio of less than or equal to 1.5.  
     
     
         29 . An algae resistant asphalt-based roofing material including a portion that is normally exposed when the roofing material is installed on a roof, the exposed portion of the roofing material comprising: 
 a substrate coated with an asphalt coating, the asphalt coating including an upper surface that is positioned above the substrate when the roofing material is installed on the roof;    an application of metallic particles applied to the upper surface of the asphalt coating, the metallic particles having a component that inhibits the growth of algae, the metallic particles comprising elongated copper-containing particles having an aspect ratio within the range of from about 1.5 to about 200; and    a surface layer of granules adhered to the asphalt coating.    
     
     
         30 . The roofing material of  claim 29  wherein the elongated copper-containing particles have a substantially circular cross-section.  
     
     
         31 . The roofing material of  claim 29  wherein the elongated copper-containing particles have a substantially circular cross-section, the diameter of the cross-section being within the range of from about 0.050 mm to about 1.5 mm.  
     
     
         32 . The roofing material of  claim 29  wherein the elongated copper-containing particles are pre-applied to the asphalt coating prior to the application of the granules.  
     
     
         33 . The roofing material of  claim 29  wherein the elongated copper-containing particles are applied to the roofing material at a rate that provides the algae inhibiting component of the elongated copper-containing particles in an amount within the range of from about 0.05 pounds per square to about 0.29 pounds per square.  
     
     
         34 . The roofing material of  claim 29  wherein the leach rate of the algae inhibiting component of the elongated copper-containing particles is within the range of from about 0.3 parts per million to about 1.0 parts per million in dew runoff from the roofing material.  
     
     
         35 . The roofing material of  claim 29  wherein the elongated copper-containing particles are applied such that greater than fifty percent of the metallic particles are covered by the asphalt coating or the granules, or both.

Join the waitlist — get patent alerts

Track US2006194023A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.