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. 25, 1991
Filed:
Sep. 06, 1989
Applicant:
Inventors:
Richard C Ockovic, Allentown, PA (US);
Wayne T McDermott, Allentown, PA (US);
Alexander Schwarz, Allentown, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356 37 ; 356336 ;
Abstract
A process for counting and sizing particles in gases in the size range of 0.0025 micrometers or greater using condensation nucleus counting wherein the condensing temperature of a saturated working fluid is incrementally adjusted to adjust sensitivity to differing sizes of particles and thus discriminate according to size.