Three patents currently held, every record listed here
2 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.
1 more record may belong here and awaits a decision; it is not counted.
The next term ends in Feb 2027. from the record
Of the 2 now held by other companies, 2 name Chevron U S.A. Inc. as their current owner. Each row says so.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
3
Ending by 2030
Feb 2027
Next term end
3
Patent families
When these terms end
Each bar runs from grant to computed term end. 2008 to 2030.
US 7,805,283
Method for History Matching a Simulation Model Using Self Organizing Maps to Generate Regions in the Simulation Model
Jan 26, 2029
20132018202320282030
A dotted end marks a recorded terminal disclaimer this site has not resolved: the term can only be shorter than the bar, never longer.
Every computed term in this portfolio is shown above.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 patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Feb 2028 · High confidence
Also notable
Ends Feb 2027 · High confidence
Also notable
Ends Jan 2029 · High confidence
Method for Optimal Gridding in Reservoir Simulation
US 7,716,029
The most cited patent in this portfolio, cited by 65 later US patents, top 25% of utility patents granted in 2010 in our data. Protection runs to 2028.
Method for Assessment of Uncertainty and Risk
US 7,467,045
Renewed at every maintenance window since the 2008 grant; no more fees are due before its term ends in 2027.
Method for History Matching a Simulation Model Using Self Organizing Maps to Generate Regions in the Simulation Model
US 7,805,283
Renewed at every maintenance window since the 2010 grant; no more fees are due before its term ends in 2029.
Formerly held, still cited
Notable
Ends no later than Oct 2030 · Medium confidence
Cited by 23 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 2030. 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 Chevron U.S.A. Inc.
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.
| Method for History Matching a Simulation Model Using Self Organizing Maps to Generate Regions in the Simulation Model | 1 in force | to Jan 2029 |
| Method for Optimal Gridding in Reservoir Simulation | 1 in force | to Feb 2028 |
| Method for Assessment of Uncertainty and Risk | 1 in force | to Feb 2027 |
Patents held now
Soonest term end first.
Showing 1 to 3 of 3
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,467,045 | Method for Assessment of Uncertainty and Risk held by Schlumberger Technology Corporation, Schlumberger Canada Limited, Services Petroliers Schlumberger, Logined B.V. and Prad Research and Development N.V. In force · High confidence | In force | High confidence | |
| US 7,716,029 | Method for Optimal Gridding in Reservoir Simulation held by Schlumberger Technology Corporation, Schlumberger Canada Limited, Services Petroliers Schlumberger and Logined B.V. In force · High confidence | In force | High confidence | |
| US 7,805,283 | Method for History Matching a Simulation Model Using Self Organizing Maps to Generate Regions in the Simulation Model held by Schlumberger Technology Corporation, Schlumberger Canada Limited, Services Petroliers Schlumberger, Logined B.V. and Prad Research and Development N.V. In force · High confidence | In force | High confidence |
Also on record, not counted in the 3: 2 patents in force now held by others · 3 patents ended. 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.
1 terminal disclaimer is on file with no resolved reference. No cap is applied and none is guessed