US Patent Issued to ARAKAWA CHEMICAL INDUSTRIES on Sept. 23 for "Papermaking agent, manufacturing method for papermaking agent and paper" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,664, issued on Sept. 23, was assigned to ARAKAWA CHEMICAL INDUSTRIES LTD. (Osaka, Japan).

"Papermaking agent, manufacturing method for papermaking agent and paper" was invented by Ryusuke Kambara (Osaka, Japan), Hiroyuki Ioka (Osaka, Japan) and Shuichi Takaki (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A relatively inexpensive papermaking agent having a high concentration and a high molecular weight that exhibits an excellent freeness and paper strength effect obtained using starches which are biomass materials. A papermaking agent which is a (meth)acrylamide polymer containing starches (a1), a (meth)acrylamide (a2), a polymerizabl...