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:
Aug. 16, 1988
Filed:
Jul. 08, 1986
Applicant:
Inventors:
John E Shaw, West Drayton, GB;
Alastair Sibbald, Maidenhead, GB;
Assignee:
Thorn Emi plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 25 ; 357 55 ;
Abstract
A chemical-sensitive semiconductor device in the form of a chemical-sensitive field effect transistor, suitable for testing relatively small volumes of a fluid analyte, comprises a substrate provided with a passageway, interconnecting its major surfaces, along which the analyte can pass. Drain and source regions are formed at opposite ends of the passageway and a chemical-sensitive gate region is formed on the sides of the passageway.