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. 26, 2019
Filed:
May. 29, 2017
Applicant:
Harima Chemicals, Inc., Hyogo, JP;
Inventors:
Assignee:
HARIMA CHEMICALS, INC., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 21/02 (2006.01); D21H 17/45 (2006.01); C08F 220/56 (2006.01); D21H 17/37 (2006.01); D21H 17/44 (2006.01);
U.S. Cl.
CPC ...
D21H 21/02 (2013.01); C08F 220/56 (2013.01); D21H 17/375 (2013.01); D21H 17/44 (2013.01); D21H 17/455 (2013.01);
Abstract
Disclosed is a pitch control agent including a (meth)acrylamide-based amphoteric polymer. The (meth)acrylamide-based amphoteric polymer contains 50 mol % or more of (meth)acrylamide, 0.5 to 20 mol % of a diallyldialkylammonium salt; and 0.1 to 14 mol % of an anionic monomer, as copolymerizable monomer components. This pitch control agent is less likely to be affected by a change in a surrounding environment, and therefore can exhibit excellent pitch controllability under various environments in paper production process.
Sodeyama, Takuji. (2019). Pitch-controlling agent and pitch-controlling method (U.S. Patent No. 10240295). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10240295
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile