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:
Nov. 08, 2011
Filed:
Apr. 22, 2008
Fred Murphy, San Jose, CA (US);
James S. Kuwabara, Menlo Park, CA (US);
Brent R. Topping, San Jose, CA (US);
Francis Parchaso, San Francisco, CA (US);
Robert C. Myhre, Hillborough, CA (US);
Fred Murphy, San Jose, CA (US);
James S. Kuwabara, Menlo Park, CA (US);
Brent R. Topping, San Jose, CA (US);
Francis Parchaso, San Francisco, CA (US);
Robert C. Myhre, Hillborough, CA (US);
The United States of America as represented by the Secretary of the Interior, Washington, DC (US);
Abstract
A pore-water profiler and method for sampling pore water. The pore-water profiler includes a sample intake probe that receives the fluid to be sampled. A clog-resistant first filter filters the fluid as it enters the sample intake probe. A second filter, which has a pore size less than the pore size of the first filter, filters the fluid a second time before the fluid enters a sample container. A sample triggering system connected to the sample container initiates sampling by causing the fluid to be drawn into the sample intake probe. The profiler provides high-resolution (centimeter-scale) vertical pore-water profiles. The sequential filtration of the pore water avoids the problem of sample-circuit clogging, even in sediments dominated by fine or organic-rich particles. The profiler has all non-metallic, acid-washable components that contact the fluid sample, making the profiler suitable for trace-inorganic studies.