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. 07, 1989
Filed:
Oct. 14, 1986
Applicant:
Inventors:
Assignee:
Toyo Soda Manufacturing Co., Ltd., Shinnanyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436180 ; 422 82 ; 422100 ; 222309 ; 222319 ; 222335 ; 222373 ; 222209 ; 222378 ; 222399 ; 2224005 ;
Abstract
Process for injecting a minute volume of a solution from a nozzle device by positive pressure applied from a source of compressed air with or without positive pressure applied in parallel from a cylinder device, comprising applying the positive pressure from the compressed air source at least in a final period of injection. The process enables in injecting minute volumes of solution to remarkably decrease the injection error due to a small fraction of solution remaining at the lower end of the nozzle and can be applied to advantage to those apparatus for analyses and measurements which strictly require precision in injection.