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:
Jul. 12, 1977
Filed:
May. 23, 1975
Applicant:
Inventors:
Donald R Landers, Ridgefield, CT (US);
Walter Greenfield, Ardsley, NY (US);
Peter D Tukey, Tarrytown, NY (US);
Assignee:
Denver Chemical Manufacturing Company, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210 77 ; 210117 ; 210359 ; 210D / ; 210D / ;
Abstract
A pressure differential sampling and filtering device and method comprising a tube adapted to hold a liquid to be filtered and an inner tube having a filter head adapted to be inserted into the tube and force the liquid up through the filter head into the inner tube is characterized by the employment of a filter head and by the inner tube being associated with and separable from a closed-end portion which then serves as a test tube when the assembly is inverted and the filter head separated therefrom.