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. 17, 2005
Filed:
Sep. 27, 2001
Applicants:
Yasuo Yamanaka, Kanagawa, JP;
Jun Watanabe, Kanagawa, JP;
Kiyotaka Sawada, Kanagawa, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29D011/00 ;
U.S. Cl.
CPC ...
Abstract
A plastic optical element producing method produces a plastic optical element by an injection molding, and includes the step of cooling the optical element to a room temperature to cool an optical surface of the plastic optical element with priority over other surfaces of the plastic optical element in a state where a temperature of the plastic optical element is within a predetermined temperature range which is less than or equal to a glass transition temperature of the resin material.