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:
Jun. 13, 1978
Filed:
Oct. 14, 1976
Robert A Young, Chatsworth, CA (US);
Xonics, Inc., Van Nuys, CA (US);
Abstract
A spectrometer generally of the electro-opto-acoustic type, using a capacitor type detection instead of acoustic detection. A holder with a sample carrier having a dielectric and with a conducting backing plate on one surface of the sample carrier and a transparent conducting coating and an electrical potential on the opposite surface, with the potential applied after sample accumulation. A source for directing a beam of radiation onto the sample for cyclically heating the sample and varying the spacing between the metal backing plate and conducting coating, and an ac detector circuit connected to the backing plate providing an ac signal varying with the spacing and hence with the composition of the sample.