US2005086907A1PendingUtilityA1

Composite shingle

51
Priority: May 25, 2001Filed: Nov 15, 2004Published: Apr 28, 2005
Est. expiryMay 25, 2021(expired)· nominal 20-yr term from priority
Inventors:Randal J. Jolitz
E04D 1/20E04D 1/14Y10T29/49799Y10T428/24372
51
PatentIndex Score
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Cited by
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Claims

Abstract

Disclosed is a composite roofing shingle. The preferred roofing shingle includes a mixture of a polymer and a filler. The preferred blend includes between about 35-65% polyethylene and 50-70% crushed limestone filler.

Claims

exact text as granted — not AI-modified
1 . A composite roofing shingle comprising a mixture of: 
 a. about 36 to 64% polymer; and    b. about 36 to 64% filler.    
   
   
       2 . A shingle according to  claim 1  where the polymer is a polyolefin.  
   
   
       3 . A shingle according to  claim 1  where the polymer is polyethylene.  
   
   
       4 . A shingle according to  claim 1  where the filler is an inorganic material.  
   
   
       5 . A shingle according to  claim 1  where the filler is crushed limestone.  
   
   
       6 . A roofing shingle: 
 a. that is less than an inch think;    b. between about 3-12 inches wide;    c. between about 6-24 inches long;    d. comprising at least about 36% polyolefin; and    e. comprising no more than about 64% filler.

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