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:
Jan. 02, 2001
Filed:
Sep. 24, 1998
Applicant:
Inventors:
Loren Somes, Dracut, MA (US);
Jeffrey S. Hovis, Boston, MA (US);
Peter F. Bronk, Medford, MA (US);
Robert Caporiccio, Waltham, MA (US);
Timothy Gillette, Brookline, MA (US);
Stefan Hrabosky, Pepperell, MA (US);
Assignee:
Orion Research, Inc., Beverly, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/726 ; G01N 2/736 ;
U.S. Cl.
CPC ...
G01N 2/726 ; G01N 2/736 ;
Abstract
The accuracy and temperature-independence of ion-selective electrode meters having a logarithm resistance temperature correction incorporated therein is enhanced by using a microprocessor controlled and measured circuit with switched reference and switched capacitor filter, and by adding a linear membrane resistance term to the algorithm to improve accuracy across a wide temperature range.