The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2001
Filed:
Jun. 25, 1999
Applicant:
Inventors:
Mitsunobu Aoyama, Hyogo, JP;
Shigeo Takiyama, Hyogo, JP;
Hidehiko Nishioka, Hyogo, JP;
Shiro Minayoshi, Hyogo, JP;
Assignee:
Maruo Calcium Company Ltd., Akashi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B 5/16 ;
U.S. Cl.
CPC ...
B32B 5/16 ;
Abstract
An additive for synthetic resins is provided which comprises particles of a petaloid hydroxyapatite represented by a chemical formula Ca,(PO,),(OH),, having the specified particle diameter, degree of dispersion: and specific surface area, and a synthetic resin composition blended with the additive is also provided. By the use of the additive of the present invention, a film satisfying anti-blocking property, transparency and anti-scratch property can be obtained.