17 patents currently held
217 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.
The next term ends in Jan 2027. from the record
Of the 217 now held by other companies, 123 name Howmet Aerospace Inc. as their current owner, and 94 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
5
Ending by 2030
Jan 2027
Next term end
17
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 May 2031 · High confidence
Also notable
Ends Dec 2027 · High confidence
Also notable
Ends Jan 2031 · High confidence
Ceramic core with composite insert for casting airfoils
US 8,899,303
Cited by 22 later US patents, top 25% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2031.
Method of Making Sputtering Target
US 7,832,619
Cited by 30 later US patents, top 25% of utility patents granted in 2010 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027.
Lockwireless Anti-Rotation Fitting
US 8,794,679
Renewed at every maintenance window since the 2014 grant; no more fees are due before its term ends in 2031.
Formerly held, still cited
Notable
Ends Jul 2037 · High confidence
Cited by 26 later US patents, top 5% of utility patents granted in 2021 in our data. Protection runs to 2037.
now held by Howmet Aerospace Inc.
Also notable
Ends Oct 2027 · High confidence
The most cited patent in this portfolio, cited by 91 later US patents, top 10% of utility patents granted in 2010 in our data. Protection runs to 2027.
now held by Howmet Global Fastening Systems Inc.
Also notable
Ends May 2031 · High confidence
Cited by 43 later US patents, top 25% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2031.
now held by Howmet 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 Dec 23, 2026The maintenance fee for Die Locking System and Method (US 9,061,346) comes due Dec 23, 2026. Unpaid by Jun 23, 2027, it lapses early.
- 1 fee due Sep 15, 2027The maintenance fee for Pt-Al-Hf/Zr coating and method (US 9,284,846) comes due Sep 15, 2027. Unpaid by Mar 15, 2028, it lapses early.
Recent changes
- 4 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 17 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Casting method, apparatus, and product | 1 in force | to Feb 2037 |
| Internal Airfoil Component Electroplating | 1 in force | to Sep 2036 |
| Internal Turbine Component Electroplating | 1 in force | to Nov 2035 |
| Locking Pin and Related Locking Element | 1 in force | to Sep 2033 |
| Pt-Al-Hf/Zr coating and method | 1 in force | to Jun 2032 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,614,671 | Closure Element In force · High confidence | In force | High confidence | |
| US 7,955,713 | Laminate of Metal Sheets and Polymer In force · High confidence | In force | High confidence | |
| US 7,596,979 | Ring Mill Apparatus and Method In force · High confidence | In force | High confidence | |
| US 7,832,619 | Method of Making Sputtering Target In force · High confidence | In force | High confidence | |
| US 10,094,027 | Self-Cleaning Substrates and Methods for Making the Same In force · High confidence | In force | High confidence | |
| US 8,794,679 | Lockwireless Anti-Rotation Fitting In force · High confidence | In force | High confidence | |
| US 8,899,303 | Ceramic core with composite insert for casting airfoils In force · High confidence | In force | High confidence | |
| US 9,284,846 | Pt-Al-Hf/Zr coating and method In force · High confidence | In force | High confidence | |
| US D791,667 | Spindle Hub for Wheel In force · High confidence | In force | High confidence | |
| US D823,212 | Spindle Hub for Wheel In force · High confidence | In force | High confidence |
Also on record, not counted in the 17: 217 patents in force now held by others · 237 patents ended · 14 applications pending · 101 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.