Gelest, Inc.
4 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.
8
Ending by 2030
Apr 2027
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.
- 1 fee due Dec 6, 2026The maintenance fee for Silicon-based Tetrahydrocannabinol Derivatives and Compositions Thereof (US 11,667,655) comes due Dec 6, 2026. Unpaid by Jun 7, 2027, it lapses early.
- 1 fee due Jan 18, 2027The maintenance fee for N-Alkyl Substituted Cyclic and Oligomeric Perhydridosilazanes, Methods of Preparation Thereof, and Silicon Nitride Films Formed Therefrom (US 11,702,434) comes due Jan 18, 2027. Unpaid by Jul 19, 2027, it lapses early.
- 1 fee due Feb 27, 2027The maintenance fee for Uv Curable Adhesive and Coating Compositions Activated by Surface Hydroxyl Groups or Moisture (US 10,392,530) comes due Feb 27, 2027. Unpaid by Aug 27, 2027, it lapses early.
- 1 fee due Mar 29, 2027The maintenance fee for Method for Producing Silicone Step-Growth Elastomers from Dual Functional Siloxanes (US 9,145,474) comes due Mar 29, 2027. Unpaid by Sep 29, 2027, it lapses early.
- 4 fees due May 3 to 26, 2027 · next May 3
- 1 fee due Jun 24, 2027The maintenance fee for High-Speed Moisture-Cure Hybrid Siloxane/Silsesquioxane-Urethane and Siloxane/Silsesquioxane-Epoxy Systems with Adhesive Properties (US 10,513,637) comes due Jun 24, 2027. Unpaid by Dec 27, 2027, it lapses early.
Recent changes
- 1 of the patents on this record was granted since Aug 17, 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 7,790,701 | Silicon-Based Tocopherol Derivatives In force · High confidence | In force | High confidence | |
| US 9,482,786 | Bird Deterrent Glass Coatings In force · Medium confidence | In force | Medium confidence | |
| US 7,851,653 | Method of Creating a Solvent-Free Polymeric Silicon-Containing Quaternary Ammonium Antimicrobial Agent Having Superior Sustained Antimicrobial Properties In force · High confidence | In force | High confidence | |
| US 10,101,510 | Bird Deterrent Glass Coatings In force · Medium confidence | In force | Medium confidence | |
| US 8,455,599 | Asymmetric Low Molecular Weight Siloxanes with One Functional Group In force · High confidence | In force | High confidence | |
| US 7,799,888 | Low Molecular Weight Siloxanes with One Functional Group In force · High confidence | In force | High confidence | |
| US 7,858,141 | Method of Creating a Sustained Silicon-Containing Quaternary Ammonium Antimicrobial Agent Within a Polymeric Material In force · High confidence | In force | High confidence | |
| US 9,029,586 | Silanes with Embedded Hydrophilicity, Dispersible Particles Derived Therefrom and Related Methods In force · High confidence | In force | High confidence | |
| US 8,563,459 | Fixed-Bed Hydrosilylation Catalyst Complexes and Related Methods In force · High confidence | In force | High confidence | |
| US 9,358,200 | Alkoxysilane Derivatives of N-Acyl Amino Acids, N-Acyl Dipeptides, and N-Acyl Tripeptides, and Particles and Stable Oil-in-Water Formulations Using the Same In force · High confidence | In force | High confidence |
Also on record, not counted in the 54: 4 patents in force now held by others · 3 lapsed for an unpaid fee · 18 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.
30 pending · 4 abandoned · 10 no status recorded