248 patents currently held
60 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.
1 more record may belong here and awaits a decision; it is not counted.
The next term ends in Apr 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
6
Ending by 2030
Apr 2027
Next term end
157
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Jun 2035 · High confidence
Also notable
Ends Aug 2034 · High confidence
Also notable
Ends May 2028 · High confidence
Polyurethane Resins Having Multiple Mechanisms of Hardening for Use in Producing Three-Dimensional Objects
US 9,453,142
Cited by 367 later US patents, top 1% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2035.
Continuous Liquid Interphase Printing
US 9,360,757
Cited by 263 later US patents, top 1% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2034.
Method and Apparatus for Extracting Carbon Dioxide from Air
US 7,708,806
Cited by 233 later US patents, top 5% of utility patents granted in 2010 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.
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 Dec 27, 2026
- 4 fees due Jan 9 to 25, 2027 · next Jan 9
- 4 fees due Feb 1 to 27, 2027 · next Feb 1
- 2 fees due Mar 10 to 12, 2027 · next Mar 10
- 5 fees due Apr 3 to 30, 2027 · next Apr 3
- 6 fees due May 12 to 21, 2027 · next May 12
- 10 fees due Jun 5 to 26, 2027 · next Jun 5
- 6 fees due Jul 2 to 30, 2027 · next Jul 2
- 4 fees due Aug 6 to 20, 2027 · next Aug 6
- 4 fees due Sep 5 to 24, 2027 · next Sep 5
- 3 fees due Oct 7 to 14, 2027 · next Oct 7
- 4 fees due Nov 12 to 14, 2027 · next Nov 12
Recent changes
- 14 of the patents on this record were granted since Aug 17, 2026
- 2 terms have ended since Aug 17, 2026
What they patent
The 5 largest of its 157 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Polyurethane Resins Having Multiple Mechanisms of Hardening for Use in Producing Three-Dimensional Objects | 7 in force | to Jun 2035 |
| Methods of Producing Three-Dimensional Objects from Materials Having Multiple Mechanisms of Hardening | 6 in force | to Jun 2035 |
| Methods of Producing Polyurethane Three-Dimensional Objects from Materials Having Multiple Mechanisms of Hardening | 6 in force | to Jun 2035 |
| Autonomous Laser Weed Eradication | 5 in force | to Jan 2041 |
| Continuous Liquid Interphase Printing | 5 in force | to Jun 2035 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 10,150,112 | Air Collector with Functionalized Ion Exchange Membrane for Capturing Ambient CO2 held by Carbon Sink, Inc. In force · Low confidence | In force | Low confidence | |
| US 8,083,836 | Method and Apparatus for Extracting Carbon Dioxide from Air held by Carbon Sink Inc. In force · High confidence | In force | High confidence | |
| US 8,273,160 | Method and Apparatus for Extracting Carbon Dioxide from Air held by Carbon Sink Inc. In force · High confidence | In force | High confidence | |
| US 9,266,052 | Method and Apparatus for Extracting Carbon Dioxide from Air held by Carbon Sink Inc. In force · High confidence | In force | High confidence | |
| US 7,708,806 | Method and Apparatus for Extracting Carbon Dioxide from Air held by Carbon Sink Inc. In force · High confidence | In force | High confidence | |
| US 8,337,589 | Method and Apparatus for Extracting Carbon Dioxide from Air held by Carbon Sink Inc. In force · High confidence | In force | High confidence | |
| US 8,999,279 | Laminar Flow Air Collector with Solid Sorbent Materials for Capturing Ambient CO2 held by Carbon Sink Inc. In force · High confidence | In force | High confidence | |
| US 8,910,526 | Device and Method for Indicating If a Fastening Element Has Reached a Tensile Yield Limit Load In force · High confidence | In force | High confidence | |
| US 9,993,974 | Method and Apparatus for Three-Dimensional Fabrication In force · High confidence | In force | High confidence | |
| US 10,016,938 | Continuous Liquid Interphase Printing In force · High confidence | In force | High confidence |
Also on record, not counted in the 248: 60 patents in force now held by others · 29 patents ended · 102 applications pending · 66 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.