39 patents currently held
13 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 Nov 2030. from the record
Of the 13 now held by other companies, 12 name Cameron International Corporation 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.
2
Ending by 2030
Nov 2030
Next term end
22
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 Jan 2037 · High confidence
Also notable
Ends Jan 2037 · High confidence
Also notable
Ends Mar 2035 · High confidence
System And Method To Reboil A Process Stream In A Distillation System By Mixing The Stream With A Heating Medium
US 10,471,366
The earliest of the three still in force, granted 2019 and renewed since. Its term ends first, in 2037. A terminal disclaimer caps this term to an earlier patent's.
System And Method To Desalinate A Feed Water Stream By Mixing The Feed Water Stream With A Heating Medium
US 10,370,264
A family of 10 related applications built on the 2019 grant. Protection runs to 2037. A terminal disclaimer caps this term to an earlier patent's.
System to Reduce Interface Emulsion Layer Formation in an Electrostatic Dehydrator or Desalter Vessel Through Use of a Low Voltage Electrostatic Interface Emulsion Treatment System Inside the Vessel
US 10,590,017
The newest of the three, granted 2020. It anchors the portfolio to 2035, later than anything else here.
Formerly held, still cited
Notable
Ends Jun 2036 · High confidence
The newest of the three, granted 2021. It anchors the portfolio to 2036, later than anything else here. A terminal disclaimer caps this term to an earlier patent's.
now held by Schlumberger Technology Corporation
Also notable
Ends Oct 2033 · High confidence
A family of 5 related applications built on the 2021 grant. Protection runs to 2033. A terminal disclaimer caps this term to an earlier patent's.
now held by Cameron International 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 Nov 28, 2026The maintenance fee for Pressure Controlled Gas Flotation (US 10,301,190) comes due Nov 28, 2026. Unpaid by May 28, 2027, it lapses early.
- 1 fee due Jan 2, 2027The maintenance fee for System And Method To Generate Steam By Mixing A Feed Water Stream With A Heating Medium (US 10,335,708) comes due Jan 2, 2027. Unpaid by Jul 2, 2027, it lapses early.
- 2 fees due Feb 6, 2027
- 1 fee due Mar 15, 2027The maintenance fee for Divalent Ion Removal From Monoethylene Glycol (MEG) Feed Streams (US 9,133,086) comes due Mar 15, 2027. Unpaid by Sep 15, 2027, it lapses early.
- 2 fees due Apr 1 to 6, 2027 · next Apr 1
- 3 fees due May 12 to 19, 2027 · next May 12
- 1 fee due Jun 22, 2027The maintenance fee for System and Method For PH Control Of Lean MEG Product From MEG Regeneration and Reclamation Packages (US 9,216,934) comes due Jun 22, 2027. Unpaid by Dec 22, 2027, it lapses early.
- 1 fee due Sep 17, 2027The maintenance fee for System to Reduce Interface Emulsion Layer Formation in an Electrostatic Dehydrator or Desalter Vessel Through Use of a Low Voltage Electrostatic Interface Emulsion Treatment System Inside the Vessel (US 10,590,017) comes due Sep 17, 2027. Unpaid by Mar 17, 2028, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
The 5 largest of its 22 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.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,630,141 | Membrane Filter Element with Multiple Fiber Types In force · High confidence | In force | High confidence | |
| US 9,764,253 | High Velocity Electrostatic Coalescing Oil/Water Separator In force · Medium confidence | In force | Medium confidence | |
| US 9,023,213 | Treatment of Interface Rag Produced during Heavy Crude Oil Processing In force · High confidence | In force | High confidence | |
| US 9,764,336 | Petroleum Desalting Utilizing Voltage Modulation In force · High confidence | In force | High confidence | |
| US 9,186,629 | Single End, Shell-Side Feed, Hollow Fiber Membrane Separation Module In force · High confidence | In force | High confidence | |
| US 9,133,086 | Divalent Ion Removal From Monoethylene Glycol (MEG) Feed Streams In force · High confidence | In force | High confidence | |
| US 9,469,585 | Divalent Ion Removal From Monoethylene Glycol (MEG) Feed Streams In force · High confidence | In force | High confidence | |
| US 9,725,388 | Divalent Ion Removal from Monoethylene Glycol (MEG) Feed Streams In force · High confidence | In force | High confidence | |
| US 9,150,477 | System for Removing Salt from a Rich Mono Ethylene Glycol Stream In force · High confidence | In force | High confidence | |
| US 9,522,865 | System For Removing Salt From A Rich Mono Ethylene Glycol Stream In force · High confidence | In force | High confidence |
Also on record, not counted in the 39: 13 patents in force now held by others · 4 patents ended · 11 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.