38 patents currently held
1 more in force is now held by another company
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
4 more records may belong here and await a decision; they are not counted.
The next term ends in Nov 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
12
Ending by 2030
Nov 2027
Next term end
30
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 Jun 2033 · High confidence
Also notable
Ends Sep 2031 · High confidence
Also notable
Ends Jan 2033 · High confidence
Etching of Plastic Using Acidic Solutions Containing Trivalent Manganese
US 10,260,000
The largest patent family in this portfolio, 7 related applications, renewed at 2 of 3 maintenance windows. Protection runs to 2033.
Chromium Alloy Coating with Enhanced Resistance to Corrosion in Calcium Chloride Environments
US 9,765,437
Granted 2017 and renewed at every maintenance window due so far. Protection runs to 2031.
Method for Improving Plating on Non-Conductive Substrates
US 8,974,869
Renewed at every maintenance window since the 2015 grant; no more fees are due before its term ends in 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.
- 1 fee due Nov 26, 2026The maintenance fee for Method of Producing Polymeric Phenazonium Compounds (US 9,040,700) comes due Nov 26, 2026. Unpaid by May 26, 2027, it lapses early.
- 2 fees due Dec 27 to 30, 2026 · next Dec 27
- 1 fee due Mar 17, 2027The maintenance fee for Passivation of Micro-Discontinuous Chromium Deposited From a Trivalent Electrolyte (US 10,415,148) comes due Mar 17, 2027. Unpaid by Sep 17, 2027, it lapses early.
Recent changes
- 1 term has ended since Aug 16, 2026
What they patent
The 5 largest of its 30 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Etching of Plastic Using Acidic Solutions Containing Trivalent Manganese | 7 in force | to Sep 2035 |
| Method for Improving Plating on Non-Conductive Substrates | 2 in force | to Jan 2033 |
| Adhesion Promoting Composition for Metal Leadframes | 2 in force | to Apr 2032 |
| Sealing Anodized Aluminum Using a Low-Temperature Nickel-Free Process | 1 in force | to Apr 2037 |
| Passivation of Micro-Discontinuous Chromium Deposited From a Trivalent Electrolyte | 1 in force | to Jan 2036 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,666,471 | Polyimide Substrate and Method of Manufacturing Printed Wiring Board Using the Same In force · High confidence | In force | High confidence | |
| US 7,704,562 | Process for Improving the Adhesion of Polymeric Materials to Metal Surfaces In force · High confidence | In force | High confidence | |
| US 7,645,393 | Metal Surface Treatment Composition In force · High confidence | In force | High confidence | |
| US 7,631,798 | Method for Enhancing the Solderability of a Surface In force · High confidence | In force | High confidence | |
| US 7,780,840 | Process for Plating Chromium from a Trivalent Chromium Plating Bath In force · High confidence | In force | High confidence | |
| US 7,704,366 | Pretreatment of Magnesium Substrates for Electroplating In force · High confidence | In force | High confidence | |
| US 7,887,693 | Acid Copper Electroplating Bath Composition In force · High confidence | In force | High confidence | |
| US 7,989,346 | Surface Treatment of Silicon In force · High confidence | In force | High confidence | |
| US 8,956,687 | Light Induced Plating of Metals on Silicon Photovoltaic Cells In force · Low confidence | In force | Low confidence | |
| US 8,088,246 | Process for Improving the Adhesion of Polymeric Materials to Metal Surfaces In force · High confidence | In force | High confidence |
Also on record, not counted in the 38: 1 patent in force now held by others · 54 patents ended · 32 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.