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. 13, 1976
Filed:
May. 12, 1975
Applicant:
Inventors:
Yoshitaka Kobayashi, Yokohama, JA;
Kinjiro Sugai, deceased, LATE OF Yokohama, JA;
by Katsuno Suqai, legal successor, Yokohama, JA;
by Hajime Sugai, legal successor, Yokohama, JA;
by Minoru Sugai, legal successor, Yokohama, JA;
by Shunji Sugai, legal successor, Yokohama, JA;
by Hiroshi Sugai, legal successor, Yokohama, JA;
Minoru Sugai, Yokohama, JA;
Assignees:
Hokuetsu Carbon Industry Co., Ltd, Yokohama, JA;
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02B / ;
U.S. Cl.
CPC ...
210 / ; 260 / ;
Abstract
Particulate polycondensates of thiourea, thiosemicarbazide, or thiocarbazide with aldehydes and phenolic or amine constituents adsorb heavy metals from aqueous solutions of their compounds, also mercury from its vapors.