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:
Jun. 02, 1992
Filed:
May. 06, 1991
Applicant:
Inventors:
Kazutaka Hosokawa, Settsu, JP;
Tetsuo Shimizu, Settsu, JP;
Kazuo Ishiwari, Settsu, JP;
Noriyasu Yamane, Settsu, JP;
Assignee:
Daikin Industries Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
528503 ; 526255 ;
Abstract
Polytetrafluoroethylene powder having an average particle size of 1 to 30 .mu.m and a specific surface area of 2 to 6 m.sup.2 /g is prepared by heating unsintered polytetrafluoroethylene powder having a melting point of 313.degree. to 330.degree. C. at a temperature in a range from a temperature 70.degree. C. lower than the melting point to a temperature lower than the melting point and comminuting the heated powder.
Hosokawa, Kazutaka. (1992). Process for preparing polytetrafluoroethylene powder (U.S. Patent No. 5118788). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5118788
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile