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. 15, 1977
Filed:
Mar. 23, 1976
Toshio Takahashi, Honjo, JA;
Toshiyasu Ehara, Misato, JA;
Ryosaku Tagaya, Isezaki, JA;
Mikio Tagaya, Isezaki, JA;
Eisai Co., Ltd., Tokyo, JA;
Abstract
An improved method for inspection of extraneous substances which may exist in a transparent liquid filled in a transparent container such as an ampoule which comprises rotating the container, projecting light through the liquid in the container, measuring the intensity of light beams passed through the container, and determining the extent of interception of light due to the presence of the substances. The invention is characterized by providing two rotating scan heads on an optical fiber line-circle converter and connecting two photoelectrical elements to the heads. This achieves, with the conventional speed, essentially the same effect as that obtained by doubling the rotating speed of the scan heads.