Class C08G : MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
Subclass 2/28: Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Post-polymerisation treatments
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11897996 | Ammonia and ammonium hydroxide stabilizers for paraformaldehyde | Sep 05, 19 | Feb 13, 24 | CELANESE INTERNATIONAL CORPORATION |
| 11498997 | Process for removal of volatile compounds from tackifiers | Jan 23, 19 | Nov 15, 22 | BASF SE |
| 10975189 | Process for producing oxymethylene copolymer | Mar 13, 17 | Apr 13, 21 | Mitsubishi Gas Chemical Company Inc.; THAI POLYACETAL CO., LTD .; |
| 10138321 | Process for production of oxymethylene copolymer | Dec 01, 15 | Nov 27, 18 | Mitsubishi Gas Chemical Company Inc. |
| 9902797 | Method for producing oxymethylene copolymer | May 10, 13 | Feb 27, 18 | MITSUBISHI GAS CHEMICAL COMPANY, INC. |
| 9745400 | Method for producing polyacetal copolymer | Dec 10, 14 | Aug 29, 17 | POLYPLASTICS CO., LTD. |
| 9695265 | Process for producing polyacetal copolymer | Dec 10, 14 | Jul 04, 17 | POLYPLASTICS CO., LTD. |
| 9657136 | Production method for polyacetal copolymer | Oct 25, 13 | May 23, 17 | POLYPLASTICS CO., LTD. |
| 9163120 | Initiator | Apr 07, 14 | Oct 20, 15 | CELANESE SALES GERMANY GMBH |
| 9090842 | Method for refining polyoxymethylene dialkyl ethers by catalytic hydrogenation using a slurry bed | Apr 21, 14 | Jul 28, 15 | Dongfang Hongsheng New Energy Application Technology Research Institute Co., Ltd |
| 8691936 | Initiator | Jun 19, 12 | Apr 08, 14 | CELANESE SALES GERMANY GMBH |
| 8202964 | Initiator | Mar 08, 11 | Jun 19, 12 | CELANESE SALES GERMANY GMBH |
| 7902324 | Initiator | Sep 26, 07 | Mar 08, 11 | CELANESE SALES GERMANY GMBH |
| 5247066 | Alkaline corrugating adhesive composition | Aug 29, 91 | Sep 21, 93 | NATIONAL STARCH AND CHEMICAL INVESTMENT HOLDING CORPORATION |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2022/0033,559 | AMMONIA AND AMMONIUM HYDROXIDE STABILIZERS FOR PARAFORMALDEHYDE | Sep 05, 19 | Feb 03, 22 | Celanese International Corporation |
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