Hexion Inc.
63 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 3 name spellings.
Previously recorded as Momentive Specialty Chemicals Inc. (to 2015)
15
Ending by 2030
Dec 2026
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 2 fees due Nov 14 to 28, 2026 · next Nov 14
- 2 fees due Mar 5, 2027
- 2 fees due May 3 to 26, 2027 · next May 3
- 1 fee due Jul 14, 2027The maintenance fee for Coating Composition (US 10,533,097) comes due Jul 14, 2027. Unpaid by Jan 14, 2028, it lapses early.
- 1 fee due Aug 16, 2027The maintenance fee for Process for the Manufacture of Alpha, Alpha-Branched Carboxylic Acid Vinyl Esters (US 9,260,374) comes due Aug 16, 2027. Unpaid by Feb 16, 2028, it lapses early.
- 1 fee due Nov 7, 2027The maintenance fee for Process for the Production of Higher Carboxylic Acid Vinyl Esters (US 11,976,037) comes due Nov 7, 2027. Unpaid by May 8, 2028, it lapses early.
Recent changes
- 4 terms have ended since Aug 16, 2026
Patents held now
Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,726,397 | Methods and Compositions for Determination of Fracture Geometry in Subterranean Formations In force · High confidence | In force | High confidence | |
| US 8,227,026 | Particles for Use as Proppants or in Gravel Packs, Methods for Making and Using the Same In force · High confidence | In force | High confidence | |
| US 7,624,802 | Low Temperature Coated Particles for Use as Proppants or in Gravel Packs, Methods for Making and Using the Same In force · High confidence | In force | High confidence | |
| US 9,096,790 | Low Temperature Coated Particles Comprising a Curable Liquid and a Reactive Powder for Use as Proppants or in Gravel Packs, Methods for Making and Using the Same In force · High confidence | In force | High confidence | |
| US 7,933,718 | Method and Tool for Determination of Fracture Geometry in Subterranean Formations Based on In-Situ Neutron Activation Analysis In force · High confidence | In force | High confidence | |
| US 7,803,855 | Wood Composites, Methods of Production, and Methods of Manufacture Thereof In force · High confidence | In force | High confidence | |
| US 8,076,006 | Triglyceride Compositions Useful for Preparing Composite Panels and Applications Thereof In force · High confidence | In force | High confidence | |
| US 8,343,634 | Triglyceride Compositions Useful for Preparing Composite Panels and Applications Thereof In force · High confidence | In force | High confidence | |
| US 8,741,430 | Storage Stable Amino-Formaldehyde Resins and Applications Thereof In force · High confidence | In force | High confidence | |
| US 8,088,881 | Storage Stable Melamine-Urea-Formaldehyde Resins and Applications Thereof In force · High confidence | In force | High confidence |
Also on record, not counted in the 51: 63 patents in force now held by others · 24 lapsed for an unpaid fee · 135 ended at full term. List them
Sources and methods
Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand.
How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
Published applications
US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.
12 pending · 17 abandoned