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:
Jan. 03, 1989
Filed:
May. 11, 1987
Applicant:
Inventors:
Yukitsugu Nakamura, Sagamihara, JP;
Kohichi Yano, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
351212 ; 351213 ;
Abstract
An opthalmic apparatus in which the corneal reflection image of an illuminating light source for observing the front eye part of an eye to be examined is substantially prevented from mixing with the corneal reflection image of a light source for measurement, when the corneal reflection image is measured, to measure the shape of the cornea of the eye to be examined, whereby the accuracy with which the measurement of the shape of the cornea is measured is enhanced.
Nakamura, Yukitsugu. (1989). Ophthalmic apparatus (U.S. Patent No. 4795250). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4795250
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile