5 patents currently held
20 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 Apr 2029. from the record
Of the 20 now held by other companies, 19 name Tesla Inc. as their current owner, and 1 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
3
Ending by 2030
Apr 2029
Next term end
4
Patent families
When these terms end
Held patents by the year their term ends
notable patents
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.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Feb 2033 · High confidence
Also notable
Ends Mar 2034 · High confidence
Also notable
Ends Dec 2030 · High confidence
Low-Cost High-Efficiency Solar Module Using Epitaxial Si Thin-Film Absorber and Double-Sided Heterojunction Solar Cell with Integrated Module Fabrication
US 9,537,032
The most cited patent in this portfolio, cited by 36 later US patents, top 10% of utility patents granted in 2017 in our data. Protection runs to 2033.
Dynamic Support System for Quartz Process Chamber
US 9,240,513
Cited by 34 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.
Heterojunction Solar Cell Based on Epitaxial Crystalline-Silicon Thin Film on Metallurgical Silicon Substrate Design
US 8,283,557
Renewed at every maintenance window since the 2012 grant; no more fees are due before its term ends in 2030.
Formerly held, still cited
Notable
Ends May 2035 · High confidence
Cited by 70 later US patents, top 5% of utility patents granted in 2018 in our data, and renewed at every maintenance window due so far. Protection runs to 2035.
now held by Tesla, Inc.
Also notable
Ends no later than May 2032 · Medium confidence
Cited by 98 later US patents, top 5% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2032. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.
now held by Tesla, Inc.
Also notable
Ends Jul 2033 · High confidence
Cited by 50 later US patents, top 10% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2033.
now held by Tesla, Inc.
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 Jul 19, 2027The maintenance fee for Dynamic Support System for Quartz Process Chamber (US 9,240,513) comes due Jul 19, 2027. Unpaid by Jan 19, 2028, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
The 3 largest of its 4 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
Patents held now
Soonest term end first.
Showing 1 to 5 of 5
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,872,020 | Heterojunction Solar Cell Based on Epitaxial Crystalline-Silicon Thin Film on Metallurgical Silicon Substrate Design In force · High confidence | In force | High confidence | |
| US 8,283,559 | Silicon-Based Dielectric Stack Passivation of Si-Epitaxial Thin-Film Solar Cells In force · High confidence | In force | High confidence | |
| US 8,283,557 | Heterojunction Solar Cell Based on Epitaxial Crystalline-Silicon Thin Film on Metallurgical Silicon Substrate Design In force · High confidence | In force | High confidence | |
| US 9,537,032 | Low-Cost High-Efficiency Solar Module Using Epitaxial Si Thin-Film Absorber and Double-Sided Heterojunction Solar Cell with Integrated Module Fabrication In force · High confidence | In force | High confidence | |
| US 9,240,513 | Dynamic Support System for Quartz Process Chamber In force · High confidence | In force | High confidence |
Also on record, not counted in the 5: 20 patents in force now held by others · 1 patent ended · 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.