42 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
3 more records may belong here and await a decision; they are not counted.
The next term ends in Dec 2026. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
11
Ending by 2030
Dec 2026
Next term end
24
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 May 2035 · High confidence
Also notable
Ends Aug 2027 · High confidence
Also notable
Ends Feb 2033 · High confidence
Spacer Frame and Method of Making Same
US 9,428,953
Cited by 27 later US patents, top 25% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2035.
Desiccant Dispensing System
US 8,474,400
Cited by 32 later US patents, top 25% of utility patents granted in 2013 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027.
Efficient Assembly of Double or Triple Pane Windows
US 8,726,487
The largest patent family in this portfolio, 7 related applications, renewed at 3 of 3 maintenance windows. Protection runs to 2033.
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 11 to 25, 2026 · next Dec 11
- 2 fees due Jan 16, 2027
- 1 fee due Feb 6, 2027The maintenance fee for Automated Spacer Frame Fabrication (US 10,369,617) comes due Feb 6, 2027. Unpaid by Aug 6, 2027, it lapses early.
- 1 fee due Mar 17, 2027The maintenance fee for File Translator System (US 10,414,051) comes due Mar 17, 2027. Unpaid by Sep 17, 2027, it lapses early.
- 1 fee due Apr 30, 2027The maintenance fee for Automated Spacer Frame Fabrication (US 11,801,544) comes due Apr 30, 2027. Unpaid by Nov 1, 2027, it lapses early.
- 1 fee due Jun 19, 2027The maintenance fee for Igu Cooling Assembly and Method of Operation (US 11,845,687) comes due Jun 19, 2027. Unpaid by Dec 20, 2027, it lapses early.
- 1 fee due Jul 14, 2027The maintenance fee for Spacer Frame and Method of Making Same (US 10,533,367) comes due Jul 14, 2027. Unpaid by Jan 14, 2028, it lapses early.
- 1 fee due Aug 18, 2027The maintenance fee for Window Cleaning System and Method (US 10,562,192) comes due Aug 18, 2027. Unpaid by Feb 18, 2028, it lapses early.
- 2 fees due Sep 3 to 8, 2027 · next Sep 3
- 1 fee due Nov 12, 2027The maintenance fee for Registration Station for Assembling Insulating Glass Windows (US 10,648,224) comes due Nov 12, 2027. Unpaid by May 12, 2028, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
The 5 largest of its 24 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Efficient Assembly of Double or Triple Pane Windows | 7 in force | to Feb 2033 |
| Spacer Frame and Method of Making Same | 5 in force | to Jan 2040 |
| Automated Spacer Frame Fabrication | 3 in force | to May 2034 |
| Insulating Glass Unit Fluid Exchange Assembly and Method | 2 in force | to Nov 2038 |
| Insulating Glass Unit Final Sealing Assembly and Method | 2 in force | to May 2038 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,448,246 | Window Frame Corner Fabrication In force · High confidence | In force | High confidence | |
| US 8,474,400 | Desiccant Dispensing System In force · High confidence | In force | High confidence | |
| US 8,250,023 | Window Processing System Comprising a Cleaning Station with Multiple Cutting Surfaces In force · High confidence | In force | High confidence | |
| US 8,015,763 | Multiple Configuration Joiner Clip In force · High confidence | In force | High confidence | |
| US 7,866,033 | Window Component System Including Pusher for Scrap Removal In force · High confidence | In force | High confidence | |
| US 7,921,064 | System and Method for Cleaning Window Frames After Learning Their Unknown Profile Using Non-Contact Sensors In force · High confidence | In force | High confidence | |
| US 9,534,439 | Apparatus for the Efficient Assembly of Multi-Pane Insulating Glass Windows In force · High confidence | In force | High confidence | |
| US 9,416,583 | Efficient Assembly of Multiple Pane Windows In force · High confidence | In force | High confidence | |
| US 11,332,972 | Efficient Assembly of Triple Pane Windows In force · High confidence | In force | High confidence | |
| US 8,813,337 | Efficient Assembly of Insulating Glass Windows In force · High confidence | In force | High confidence |
Also on record, not counted in the 42: 52 patents ended · 3 applications pending · 16 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.