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. 21, 1978
Filed:
Feb. 25, 1977
Sadao Sumikama, Yokohama, JP;
Shigeru Nakamura, Yokohama, JP;
Kozo Shirato, Ohmiya, JP;
Kazuo Hiraizumi, Funabashi, JP;
Nobuo Takasu, Kawaguchi, JP;
Mitsuru Taguchi, Yokohama, JP;
Tsuyoshi Yamada, Yokohama, JP;
Susumu Ishiguro, Yokohama, JP;
Showa Denko K. K, Tokyo, JP;
Erma Optical Works, Ltd., Tokyo, JP;
Abstract
Disclosed herein is a high-sensitivity differential refractometer which is characterized by having a light source disposed outside a housing, a reflecting mirror attached at the end portion thereof to a reflecting mirror-supporting plate connected with the end of a movable plate, said movable plate being so constructed as to rotate around a vertical axis and permit free change of the angle formed between said reflecting mirror-supporting plate and the movable plate, a twisting member disposed inside a lead-in tube and said lead-in tube fastened to a removable case and built in a metallic block inside the housing.