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:
Nov. 17, 1998
Filed:
Jun. 13, 1996
Applicant:
Inventors:
Toyohisa Hiroki, Chiba-ken, JP;
Tadashi Suzuki, Saitama-ken, JP;
Assignees:
Toska Co., Ltd., Tokyo, JP;
Optec Co., Ltd., Saitama-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264318 ; 2643281 ; 264334 ; 249 59 ; 425330 ; 425542 ; 425D / ;
Abstract
A process of molding a synthetic resin screw includes upper mold members 2 and 4, lower mold members 3 and 5, and four sets of slide cores 2a, 4a, 3a and 5a supported by the respective mold members and withdrawable in directions parallel to a parting plane between the upper mold members and the lower mold members.