24/06/2005 - Controller General of Patents, Designs, and Trade Marks

(21) Application No. 3021/DEL/1997 A (22) Date of filing of Application: 21/10/1997
(54) Title of the invention: “MICA TAPE AND INSULATED COIL USING THE SAME.”
(51) International Classification 7 : B 32B 5/10,
9/00, 15/02, 17/02
(30) Priority Data:
(31) Document No.: NA
(32) Date: NA
(33) Name of convention country: NA
(66) Filed U/s 5(2): NIL
(61) Patent of addition to application No.: NA
(62) Filed on: NA
(63) Divisional to Application No.: NIL
(64) Filed on: NA
Total No Of Pages: 25
(57) Abstract:
(71) Name of the applicant:
KABUSHIKI KAISHA TOSHIBA AND
NIPPON RIKA KOGYOSHO CO. LTD.
Address of the Applicant:
72 Horikawa-cho, Saiwai-ku, Kawasaki-shi,
Japan and 20-6, Ohi 1-chome, Shinagawa-ku,
Tokyo, Japan.
(72) Name of the Inventor:
NORIYUKI IWATA
HISAYASU MITSUI
HIROSHI HATANO
HIDEAKI NAKATSU
TAKUO YOSHIDA
A mica tape formed by a paper-making process from a mixture of a mica paper and at least one
selected from the group consisting of a short fiber made of a nitrogen-free organic material and a
short fiber made of an inorganic material, and an insulated coil by winding the mica tape around a
conductive coil and impregnating the mica tape with a solventless thermosetting resin. The short
fiber has an average diameter of 0.1 to 20 µm and an average length of 0.5 to 10 mm.
18183