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:
May. 19, 1981
Filed:
Mar. 29, 1979
Masahiro Iwata, Saitama, JP;
Yuichi Taka, Soka, JP;
Pentel Kabushiki Kaisha, Tokyo, JP;
Abstract
A process for preparing microcapsules comprising a core of highly viscous liquid substance encapsuled with a wall of an aggregate of finely divided silica powder, which comprises adding the highly viscous liquid substance into a powder bed of the finely divided silica powder under stirring with a cutter. The microcapsules thus obtained have such a structure that the core of highly viscous liquid substance is coated with a wall of an aggregate of the finely divided silica powder and a gelatinized layer formed between the wall and the liquid core substance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile