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:
Feb. 11, 2003
Filed:
May. 21, 2001
Applicant:
Inventor:
Rongtai Wang, Edina, MN (US);
Assignee:
Rosemount Inc., Eden Prairie, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L 9/12 ;
U.S. Cl.
CPC ...
G01L 9/12 ;
Abstract
A pressure transmitter includes a pressure sensor comprising a pressure cell having an interior to form a main cell cavity and a deflectable diaphragm which deflects in response to an applied pressure. The pressure sensor includes electrodes to compensate for hysteresis. A charge inverter amplifier includes a switch capacitor such that it may be implemented in a single integrated circuit.