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:
Mar. 29, 1994
Filed:
Jun. 01, 1992
Landy B White, Sunol, CA (US);
Thermo Separation Products (California) Inc., Fremont, CA (US);
Abstract
A sample preparation method and apparatus is provided which is capable of automatic operation over a broad range with improved accuracy and precision, and which is capable of sampling with improved accuracy and flushing without operator intervention. A pair of syringes are used to measure large and small volumes of components, respectively, and can be operated automatically using a processor to prepare samples. Further, the method and apparatus incorporate a solvent selector valve which permits various solvents to be selected as required to prepare a particular sample. Automatic flushing of the apparatus is also provided after the preparation of each sample.