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:
Feb. 24, 2004
Filed:
Jan. 18, 2002
Applicant:
Inventors:
Noriaki Masui, Kanagawa, JP;
Shigeru Deguchi, Kanagawa, JP;
Kaoru Tsujii, Kanagawa, JP;
Koki Horikoshi, Kanagawa, JP;
Assignee:
Japan Marine Science & Technology Center, Yokosuka, JP;
Primary Examiner:
Int. Cl.
CPC ...
E21B 4/902 ;
U.S. Cl.
CPC ...
E21B 4/902 ;
Abstract
A method of taking a crustal core sample, wherein the crustal core sample is obtained in a state coated with an antimicrobial polymeric gel formed of a polymer obtained by polymerizing an antimicrobial monomer, preferably a quaternary ammonium salt compound. The polymer preferably contains a component derived from the antimicrobial monomer in a proportion of 1 to 10 mol%.