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:
Mar. 18, 1986
Filed:
Jun. 18, 1984
Hideji Kuwajima, Hitachi, JP;
Takeyoshi Watanabe, Hitachi, JP;
Hitachi Chemical Company, Ltd., Tokyo, JP;
Abstract
A reconstituted mica material produced by sheet forming a slurry containing mica flakes prepared by disintegrating unfired mica and comprising (i) mica flakes having a particle size of 1.7 mm or more and an aspect ratio of 150 or more, (ii) mica flakes having a particle size of 1.0 mm or more and less than 1.7 mm and an aspect ratio of 150 or more, (iii) mica flakes having a particle size of 0.25 mm or more and less than 1.0 mm and an aspect ratio of 100 or more, and (iv) mica flakes having a particle size of less than 0.25 mm and an aspect ratio of 100 or more, in definite ranges, gives reconstituted mica prepreg materials, reconstituted mica products and insulated coils having excellent mechanical and electrical properties.