722 patents currently held
18 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.
2 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.
69
Ending by 2030
Dec 2026
Next term end
626
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 Aug 2031 · High confidence
Also notable
Ends Jan 2032 · High confidence
Also notable
Ends Jul 2034 · High confidence
Glass or Glass-Ceramic Composite Material and Method for Producing Same
US 8,999,445
The most cited patent in this portfolio, cited by 55 later US patents, top 10% of utility patents granted in 2015 in our data. Protection runs to 2031.
Transparent Lithium Glass-Ceramic Material, Production and Use Thereof
US 9,249,045
Cited by 37 later US patents, top 10% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2032.
Substrate with Antireflection Coating and Method for Producing Same
US 9,296,648
Cited by 22 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 2034.
Formerly held, still cited
Notable
Ends Jun 2034 · High confidence
Cited by 31 later US patents, top 10% of utility patents granted in 2018 in our data, and renewed at every maintenance window due so far. Protection runs to 2034.
now held by Gemtron Corporation
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 Nov 28, 2026The maintenance fee for Radiopaque glass and uses thereof (US 10,301,212) comes due Nov 28, 2026. Unpaid by May 28, 2027, it lapses early.
- 13 fees due Dec 4 to 30, 2026 · next Dec 4
- 15 fees due Jan 2 to 30, 2027 · next Jan 2
- 17 fees due Feb 1 to 28, 2027 · next Feb 1
- 11 fees due Mar 3 to 24, 2027 · next Mar 3
- 24 fees due Apr 3 to 30, 2027 · next Apr 3
- 8 fees due May 7 to 28, 2027 · next May 7
- 18 fees due Jun 1 to 29, 2027 · next Jun 1
- 14 fees due Jul 2 to 30, 2027 · next Jul 2
- 20 fees due Aug 2 to 27, 2027 · next Aug 2
- 14 fees due Sep 1 to 29, 2027 · next Sep 1
- 15 fees due Oct 2 to 28, 2027 · next Oct 2
- 4 fees due Nov 3 to 7, 2027 · next Nov 3
Recent changes
- Nov 10Assignment recorded on 1 record: Hartl, Helmut, MR. to Schott AG Recorded Nov 10, 2026, executed Dec 23, 2025. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76696, frame 120.
- Oct 14Assignment recorded on 1 record: Hauf, Moritz, DR. and 4 others to Schott AG Recorded Oct 14, 2026, executed Oct 9, 2025. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76376, frame 690.
- 19 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 626 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Substrate with Antireflection Coating and Method for Producing Same | 4 in force | to Jul 2034 |
| Ring-Shaped or Plate-Like Element and Method for Producing Same | 4 in force | to Sep 2031 |
| Tray for filling of vials syringes and cartridges for fill and finish machines | 3 in force | to Feb 2041 |
| Structured Plate-Like Glass Element and Process for the Production Thereof | 3 in force | to May 2040 |
| Glass-Metal Feedthrough | 3 in force | to Oct 2039 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,592,278 | Glass Ceramic In force · High confidence | In force | High confidence | |
| US 7,810,448 | Apparatus and Method for the Treating of Workpieces In force · High confidence | In force | High confidence | |
| US 7,591,961 | Translucent Piezoelectric Glass Ceramic In force · High confidence | In force | High confidence | |
| US 7,760,977 | Fiber-Optic Cable In force · High confidence | In force | High confidence | |
| US 7,900,479 | Method and Device for Melting the Ends of Rods In force · High confidence | In force | High confidence | |
| US 7,470,642 | Aluminoborosilicate Glass In force · High confidence | In force | High confidence | |
| US 7,598,192 | Optical Glass In force · High confidence | In force | High confidence | |
| US 7,569,505 | Method for Producing an Electronic Component Passivated by Lead Free Glass In force · High confidence | In force | High confidence | |
| US 8,163,392 | Method for Producing an Electronic Component Passivated by Lead Free Glass In force · High confidence | In force | High confidence | |
| US 7,538,892 | Method and Apparatus for Examining End Faces of Light Guides In force · High confidence | In force | High confidence |
Also on record, not counted in the 722: 18 patents in force now held by others · 599 patents ended · 229 applications pending · 441 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.