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. 18, 1982
Filed:
Sep. 25, 1980
Hajime Miyajima, Sakado, JP;
Akio Nakakura, Sakado, JP;
Toko, Inc., Tokyo, JP;
Abstract
A surface acoustic wave device is provided which includes a phase-modulated interdigital electrode and a uniform interdigital electrode having an equal electrode finger width and spacing, and the device is arranged to avoid occurrence of deviation of the actual performance thereof from the designed one. To this end, the electrode finger width and spacing of the uniform interdigital electrode are determined such that the ratio of metal surface to unmetallized substrate area in the phase-modulated interdigital electrode becomes equal to the ratio of metal surface to unmetallized substrate area in the uniform inter-digital electrode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile