33 patents currently held

31 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.

24 more records may belong here and await a decision; they are not counted.

The next term ends in Feb 2027. from the record

Of the 31 now held by other companies, 12 name Hydraulic Technologies USA LLC as their current owner, and 19 more name another party. Each row says which.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Feb 2027

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027 2028 2029 2030 20312032203320342035 2036 2037 203820392040 2041 2042 204320442045

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

Lock Strip for Heat Exchanger US 11,624,563

The newest of the three, granted 2023. It anchors the portfolio to 2041, later than anything else here.

Ends Oct 2041 · High confidence Also notable

Method of Cleaning a High Temperature Food Processing Line in Place and Food Sterilization Line US 11,528,919

Granted 2022. Computed term ends 2038.

Ends Apr 2038 · High confidence Also notable

Mixer Assembly Apparatus and Method US 9,694,329

Granted 2017 and renewed at every maintenance window due so far. Protection runs to 2033. A terminal disclaimer caps this term to an earlier patent's.

Ends Apr 2033 · High confidence

Formerly held, still cited

Notable

A Hydraulic Torque Wrench US 11,318,592

Cited by 4 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2037.

now held by Hydraulic Technologies England Limited

Ends Nov 2037 · High confidence

Also notable

Filter Assembly and Method US RE44,424

Renewed at every maintenance window since the 2013 grant; no more fees are due before its term ends in 2028.

now held by Industrial Technologies & Services Americas Inc.

Ends May 2028 · Low confidence

Also notable

Cylinder Having A Floating Piston, Low Profile Swivel Cap, And Lubricated Rod US 10,107,314

Granted 2018 and renewed at every maintenance window due so far. Protection runs to 2035.

now held by Hydraulic Technologies USA LLC

Ends Dec 2035 · High confidence

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 11, 2026
The maintenance fee for Mixer Assembly Apparatus and Method (US 10,315,171) comes due Dec 11, 2026. Unpaid by Jun 11, 2027, it lapses early.
3 fees due Feb 11 to 22, 2027 · next Feb 11
1 fee due Jun 17, 2027
The maintenance fee for Drive System and Drive Sub-Assembly for Driving a Shaft (US 10,508,727) comes due Jun 17, 2027. Unpaid by Dec 17, 2027, it lapses early.
1 fee due Jul 30, 2027
The maintenance fee for Hygienic Heat Exchanger (US 11,885,574) comes due Jul 30, 2027. Unpaid by Jan 31, 2028, it lapses early.
1 fee due Sep 22, 2027
The maintenance fee for Mixing Apparatus with Stationary Shaft (US 9,289,733) comes due Sep 22, 2027. Unpaid by Mar 22, 2028, it lapses early.
2 fees due Oct 14 to 21, 2027 · next Oct 14
2 fees due Nov 3, 2027

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

What they patent

The 5 largest of its 31 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Hygienic Heat Exchanger	2 in force	to Mar 2036
Mixer Assembly Apparatus and Method	2 in force	to Aug 2033
Systems and Method for Removing the Yellow Color of Riboflavin from Lactose Solutions	1 in force	to Jul 2042
Lock Strip for Heat Exchanger	1 in force	to Oct 2041
Pump for Pumping Heat-Sensitive Fluids	1 in force	to Dec 2040

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 7,481,573	Mixing Impeller with Pre-Shaped Tip Elements In force Term ends Feb 24, 2027 · High confidence	In force	Term ends Feb 24, 2027	High confidence
US 7,547,135	Disposable Sanitary Mixing Apparatus and Method In force Term ends Apr 16, 2027 · High confidence	In force	Term ends Apr 16, 2027	High confidence
US 7,550,120	Cylindrical Mixer-Settler Apparatus and Method In force Term ends May 15, 2027 · High confidence	In force	Term ends May 15, 2027	High confidence
US 7,563,087	Pump Rotor Seal Apparatus and Method In force Term ends Jul 26, 2027 · High confidence	In force	Term ends Jul 26, 2027	High confidence
US 7,473,025	Mixing Impeller with Spiral Leading Edge In force Term ends Jan 31, 2028 · High confidence	In force	Term ends Jan 31, 2028	High confidence
US 7,726,946	Sanitary Removable Impeller Hub and Method In force Term ends Nov 23, 2028 · High confidence	In force	Term ends Nov 23, 2028	High confidence
US 7,874,719	Mounting Assembly and Method for a Drive System for a Mixer In force Term ends May 6, 2029 · High confidence	In force	Term ends May 6, 2029	High confidence
US 8,327,881	Double Seat Valve Apparatus In force Term ends Mar 7, 2030 · High confidence	In force	Term ends Mar 7, 2030	High confidence
US 8,007,264	Positive Displacement Pump Apparatus and Method In force Term ends May 23, 2030 · High confidence	In force	Term ends May 23, 2030	High confidence
US 8,176,655	Vapor Atmosphere Spray Dryer held by SPX Flow Technology Danmark A/S In force Term ends Jan 8, 2031 · High confidence	In force	Term ends Jan 8, 2031	High confidence

10 of 33 patents shown.

Pro members see all 33.

Pro members: see all 33 patents

Also on record, not counted in the 33: 31 patents in force now held by others · 67 patents ended · 2 applications pending · 27 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.

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