Chempolis Oy
Records under this name other than the patents Chempolis Oy holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 1 patents it holds.
Showing 1 to 7 of 7 · Back to Chempolis Oy
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,923,888 | Process for recovering organic acids from bleaching liquors Term ended Term ended May 13, 2022 · From the USPTO record | Term ended | Term ended May 13, 2022 | From the USPTO record |
| US 6,955,743 | Method for producing furfural, acetic acid and formic acid from spent pulp-cooking liquor Term ended Term ended Mar 15, 2022 · From the USPTO record | Term ended | Term ended Mar 15, 2022 | From the USPTO record |
| US 6,252,109 | Method for the recovery of formic acid Term ended Term ended Feb 9, 2020 · From the USPTO record | Term ended | Term ended Feb 9, 2020 | From the USPTO record |
| US 6,156,156 | Method of producing pulp using single-stage cooking with formic acid and washing with performic acid Term ended Term ended May 3, 2019 · From the USPTO record | Term ended | Term ended May 3, 2019 | From the USPTO record |
| US 6,562,191 | Process for producing pulp with a mixture of formic acid and acetic acid as cooking chemical Lapsed on the fee record Ended May 13, 2015 · From the USPTO record | Lapsed on the fee record | Ended May 13, 2015 | From the USPTO record |
| US 6,503,369 | Process for producing cellulose and fertilizer by-product Lapsed on the fee record Ended Jan 7, 2015 · From the USPTO record | Lapsed on the fee record | Ended Jan 7, 2015 | From the USPTO record |
| US 7,097,738 | Process for producing pulp Lapsed on the fee record Ended Aug 29, 2014 · From the USPTO record | Lapsed on the fee record | Ended Aug 29, 2014 | From the USPTO record |