579 patents currently held
7 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.
69
Ending by 2030
Apr 2027
Next term end
536
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 14, 2026 · includes USPTO assignment & status data published Nov 14, 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 Nov 2029 · High confidence
Also notable
Ends Mar 2030 · High confidence
Also notable
Ends Nov 2033 · High confidence
Fire and Water Resistant Expansion Joint System
US 10,941,562
Cited by 64 later US patents, top 5% of utility patents granted in 2021 in our data. Protection runs to 2029. A terminal disclaimer caps this term to an earlier patent's.
Fire And/Or Water Resistant Expansion and Seismic Joint System
US 10,787,806
Cited by 61 later US patents, top 5% of utility patents granted in 2020 in our data. Protection runs to 2030. A terminal disclaimer caps this term to an earlier patent's.
Expansion Joint System
US 10,544,582
Cited by 43 later US patents, top 5% of utility patents granted in 2020 in our data. Protection runs to 2033. A terminal disclaimer caps this term to an earlier patent's.
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.
- 4 fees due Nov 19 to 28, 2026 · next Nov 19
- 5 fees due Dec 6 to 30, 2026 · next Dec 6
- 7 fees due Jan 9 to 28, 2027 · next Jan 9
- 7 fees due Feb 4 to 27, 2027 · next Feb 4
- 9 fees due Mar 10 to 29, 2027 · next Mar 10
- 12 fees due Apr 1 to 29, 2027 · next Apr 1
- 8 fees due May 5 to 26, 2027 · next May 5
- 13 fees due Jun 1 to 30, 2027 · next Jun 1
- 13 fees due Jul 2 to 30, 2027 · next Jul 2
- 14 fees due Aug 2 to 27, 2027 · next Aug 2
- 12 fees due Sep 3 to 24, 2027 · next Sep 3
- 7 fees due Oct 2 to 23, 2027 · next Oct 2
- 4 fees due Nov 12, 2027
Recent changes
- 17 of the patents on this record were granted since Aug 16, 2026
- 12 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 536 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Precompressed Foam Expansion Joint System Transition | 13 in force | to Oct 2032 |
| Insulated Roof Diaphragms and Methods | 3 in force | to May 2037 |
| Manufacturing Process and Composition for Foamed Pvc-P Rock Shields | 3 in force | to Feb 2036 |
| Exterior Finish System | 3 in force | to Feb 2031 |
| Fire and Water Resistant Expansion and Seismic Joint System | 3 in force | to May 2030 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,334,433 | Moisture-Hardening Compositions Containing Silane-Functional Polymers and Aminosilane Adducts In force · Medium confidence | In force | Medium confidence | |
| US D685,248 | Drill Attachment In force · High confidence | In force | High confidence | |
| US D685,745 | Spacer Element In force · High confidence | In force | High confidence | |
| US D685,924 | Grass Paver In force · High confidence | In force | High confidence | |
| US 7,641,264 | Reinforcement Device In force · High confidence | In force | High confidence | |
| US 7,828,474 | Shot Pump and Variable-Speed-Type Two-Liquid Metering and Mixing Apparatus In force · High confidence | In force | High confidence | |
| US 8,012,543 | Use and Method for Reduction of Corrosion In force · High confidence | In force | High confidence | |
| US 8,454,264 | Expansion Joint System In force · Medium confidence | In force | Medium confidence | |
| US 7,605,198 | Molding Resin Composition In force · High confidence | In force | High confidence | |
| US 7,748,773 | Structural Member Reinforcement In force · High confidence | In force | High confidence |
Also on record, not counted in the 579: 7 patents in force now held by others · 248 patents ended · 268 applications pending · 347 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.