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. 15, 2009
Filed:
Jul. 25, 2007
Applicants:
Eiichiro Yoshikawa, Kobe, JP;
Akitoshi Fujisawa, Kobe, JP;
Inventors:
Eiichiro Yoshikawa, Kobe, JP;
Akitoshi Fujisawa, Kobe, JP;
Assignee:
Kabushiki Kaisha Kobe Seiko Sho, Hyogo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B 51/06 (2006.01); B41L 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A resin-coated metal plate used as a protective plate in drilling a printed wiring board has a metal plate and a resin film including a thermoplastic resin coated on at least one surface of the metal plate. A melting peak temperature of the thermoplastic resin is in a range of 60-120° C., and in a TMA curve, a temperature difference exhibited by the thermoplastic resin is within a range of 5° C. to 30° C. in a period while penetration of the probe is changed from 10% to 100% of the resin thickness in a temperature range of 20° C. to 200° C.