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. 25, 1992
Filed:
Jul. 02, 1990
Applicant:
Inventors:
John L Remo, St. James, NY (US);
Robert Turner, Coram, NY (US);
Assignee:
Quantametrics Inc., St. James, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250288 ; 73 2335 ; 73 234 ;
Abstract
The presence of dangerous substances such as cocaine is detected by atmospheric samples that include the residues (such as ether) of the manufacture of the suspected substances into a gas chromatograph to remove substances other than the residues and thereafter drawing them into a proportional counter chamber having a high voltage and a signal wire. A laser passes light capable of exciting the suspected residues through the proportional counter to produce ionization and generate a photoelectron. The signal wire passes this to an analyzer which indicates the presence of the suspected residues.