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:
Mar. 22, 1988
Filed:
Jul. 29, 1987
Applicant:
Inventor:
Masafumi Souma, Oume, JP;
Assignee:
Iwatsu Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01M / ;
U.S. Cl.
CPC ...
356731 ;
Abstract
A time domain reflectometer includes a combined a pulse generator for generating a pulse which is fed to an object under test such as a optical fiber and a sampler for sampling a reflection signal such as a back scattering signal. The pulse generator is controlled by analog delay means and the sampler is controlled by digital delay means. It, therefore, is possible to sample the small back scattering signal and to measure a very long fiber without influences of undesirable signals.
Souma, Masafumi. (1988). Low noise optical time domain reflectometer (U.S. Patent No. 4732469). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4732469
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile