550 patents currently held
10 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 Mar 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
75
Ending by 2030
Mar 2027
Next term end
416
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 Mar 2027 · High confidence
Also notable
Ends Mar 2027 · Medium confidence
Also notable
Ends Jul 2035 · High confidence
Coated Steel Strips, Methods of Making the Same, Methods of Using the Same, Stamping Blanks Prepared from the Same, Stamped Products Prepared from the Same, and Articles of Manufacture Which Contain Such a Stamped Product
US 8,307,680
Cited by 32 later US patents, top 25% of utility patents granted in 2012 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027.
Method of Butt-Welding a Coated Steel Plate
US 9,375,809
Cited by 18 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 2027.
Method and Device for Preparing Aluminum-Coated Steel Sheets Intended for Being Welded and Then Hardened Under a Press; Corresponding Welded Blank
US 10,668,570
Cited by 18 later US patents, top 25% of utility patents granted in 2020 in our data. Protection runs to 2035.
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.
- 6 fees due Dec 4 to 30, 2026 · next Dec 4
- 9 fees due Jan 2 to 25, 2027 · next Jan 2
- 9 fees due Feb 1 to 28, 2027 · next Feb 1
- 5 fees due Mar 3 to 17, 2027 · next Mar 3
- 10 fees due Apr 1 to 30, 2027 · next Apr 1
- 12 fees due May 7 to 28, 2027 · next May 7
- 4 fees due Jun 1 to 12, 2027 · next Jun 1
- 4 fees due Jul 23 to 30, 2027 · next Jul 23
- 5 fees due Aug 2 to 27, 2027 · next Aug 2
- 9 fees due Sep 5 to 30, 2027 · next Sep 5
- 17 fees due Oct 2 to 23, 2027 · next Oct 2
- 5 fees due Nov 5 to 12, 2027 · next Nov 5
Recent changes
- Sep 25Assignment recorded on 1 record: Lam, Jimmy and 1 other to Arcelormittal Recorded Sep 25, 2026, executed Apr 28, 2026. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76149, frame 150.
- 19 of the patents on this record were granted since Aug 16, 2026
- 9 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 416 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| A Plate | 13 in force | to Mar 2029 |
| Method and Device for Preparing Aluminum-Coated Steel Sheets Intended for Being Welded and Then Hardened Under a Press; Corresponding Welded Blank | 7 in force | to Mar 2036 |
| Method of Producing Press-Hardened and Coated Steel Parts at a High Productivity Rate | 5 in force | to Feb 2035 |
| Metal Sheet with a Znal Coating | 5 in force | to Jun 2034 |
| Steel Sheet and High Strength Press Hardened Steel Part Having Excellent Bending and Method of Manufacturing the Same | 4 in force | to Apr 2044 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,307,680 | Coated Steel Strips, Methods of Making the Same, Methods of Using the Same, Stamping Blanks Prepared from the Same, Stamped Products Prepared from the Same, and Articles of Manufacture Which Contain Such a Stamped Product In force · High confidence | In force | High confidence | |
| US 9,375,809 | Method of Butt-Welding a Coated Steel Plate held by Arcelormittal France In force · Medium confidence | In force | Medium confidence | |
| US 9,669,490 | Precoated Steel Plate, Welded Blank, Part and Methods held by Arcelormittal France In force · Medium confidence | In force | Medium confidence | |
| US 9,669,491 | Method of Forming a Steel Part and Steel Part held by Arcelormittal France In force · Medium confidence | In force | Medium confidence | |
| US 9,676,061 | Methods of Fabricating a Precoated Steel Plate held by Arcelormittal France In force · Medium confidence | In force | Medium confidence | |
| US 9,682,443 | Welded Blank and Part held by Arcelormittal France In force · Medium confidence | In force | Medium confidence | |
| US 10,352,342 | Steel Part held by Arcelormittal France In force · Medium confidence | In force | Medium confidence | |
| US 10,473,130 | Steel Part held by Arcelormittal France In force · Medium confidence | In force | Medium confidence | |
| US 10,480,554 | Steel Part held by Arcelormittal France In force · Medium confidence | In force | Medium confidence | |
| US 10,626,902 | Steel Part held by Arcelormittal France In force · Medium confidence | In force | Medium confidence |
Also on record, not counted in the 550: 10 patents in force now held by others · 49 patents ended · 348 applications pending · 71 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.