US2003070688A1PendingUtilityA1

Tobacco and cigarette giving decreased sub-current smoke

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Priority: Apr 9, 1999Filed: Oct 16, 2001Published: Apr 17, 2003
Est. expiryApr 9, 2019(expired)· nominal 20-yr term from priority
Inventors:Hideki AokiHideo AokiKenichiro MatsudaMotoo NiwaYasushi KawaiTakashi KutsunoSeishi Gotoh
A24B 15/28A24D 1/02A24B 15/287
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PatentIndex Score
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Cited by
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References
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Claims

Abstract

Tobacco preferably contains powdery basic calcium phosphate, particularly, powdery calcium-defective basic calcium phosphate, adsorbed on or mixed with the tobacco, for decreasing the amount of side stream smoke rising from the burning site. In the case that tobacco is used in the form of a cigarette, the paper sheet surrounding the tobacco may contain powdery basic calcium phosphate.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . Tobacco having powdery basic calcium phosphate adsorbed thereon or mixed therewith.  
     
     
         2 . The tobacco of  claim 1 , in which the powdery basic calcium phosphate is powdery calcium-defective basic calcium phosphate.  
     
     
         3 . The tobacco of  claim 1 , in which the powdery basic calcium phosphate has a specific surface area in the range of 10 to 150 m 2 /g.  
     
     
         4 . The tobacco of  claim 1 , in which a powder of material selected from the group consisting of calcium tertiary phosphate, clay, silica, alumina, calcia, magnesia, glass, and gypsum is further adsorbed on or mixed with the tobacco.  
     
     
         5 . A cigarette comprising tobacco and a paper sheet surrounding the tobacco, in which the tobacco has powdery basic calcium phosphate adsorbed thereon or mixed therewith.  
     
     
         6 . The cigarette of  claim 5 , in which the powdery basic calcium phosphate is powdery calcium-defective basic calcium phosphate.  
     
     
         7 . The cigarette of  claim 5 , in which the powdery basic calcium phosphate has a specific surface area in the range of 10 to 150 m 2 /g.  
     
     
         8 . The cigarette of  claim 5 , in which a powder of material selected from the group consisting of calcium tertiary phosphate, clay, silica, alumina, calcia, magnesia, glass, and gypsum is further adsorbed on or mixed with the tobacco.  
     
     
         9 . A cigarette comprising tobacco and a paper sheet surrounding the tobacco, in which the paper sheet contains powdery basic calcium phosphate therein.  
     
     
         10 . The cigarette of  claim 9 , in which the powdery basic calcium phosphate is powdery calcium-defective basic calcium phosphate.  
     
     
         11 . The cigarette of  claim 9 , in which the powdery basic calcium phosphate has a specific surface area in the range of 10 to 150 m 2 /g.

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