12 patents currently held

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

The next term ends in Jul 2034. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Jul 2034

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

202620272028202920302031203220332034 2035 2036 203720382039204020412042204320442045

notable patents 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.

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

Stable Salt-Free Polyaluminum Chlorosulfates US 9,611,155

The most cited patent in this portfolio, cited by 14 later US patents, top 25% of utility patents granted in 2017 in our data. Protection runs to 2034.

Ends Jul 2034 · High confidence Also notable

Method for Production of Aluminum Chloride Derivatives US 10,040,072

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

Ends Oct 2035 · High confidence Also notable

Process for Producing Aluminum Chlorohydrate Particles US 11,634,338

Granted 2023. Computed term ends 2037.

Ends Mar 2037 · 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 Apr 22, 2027
The maintenance fee for Stable Salt-Free Polyaluminum Chlorosulfates (US 10,450,209) comes due Apr 22, 2027. Unpaid by Oct 22, 2027, it lapses early.
1 fee due Jun 12, 2027
The maintenance fee for System and Method for Production of Aluminum Chloride Derivatives (US 11,840,457) comes due Jun 12, 2027. Unpaid by Dec 13, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted since Aug 16, 2026

What they patent

The 3 largest of its 7 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Method for Production of Aluminum Chloride Derivatives	3 in force	to Feb 2036
Stable Salt-Free Polyaluminum Chlorosulfates	3 in force	to Jul 2034
Method for Making Sulfated Polyaluminum Chloride (PACS) or Polyaluminum Chloride (PAC) and Pacs or Pac Made by Same	2 in force	to Feb 2045

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 9,611,155	Stable Salt-Free Polyaluminum Chlorosulfates In force Term ends Jul 17, 2034 · High confidence	In force	Term ends Jul 17, 2034	High confidence
US 9,878,929	Stable Salt-Free Polyaluminum Chlorosulfates In force Term ends Jul 17, 2034 · High confidence	In force	Term ends Jul 17, 2034	High confidence
US 10,450,209	Stable Salt-Free Polyaluminum Chlorosulfates In force Term ends Jul 17, 2034 · High confidence	In force	Term ends Jul 17, 2034	High confidence
US 12,054,400	Method for Making Sulfated Polyaluminum Chloride (PACS) or Polyaluminum Chloride (PAC) and Pacs or Pac Made by Same In force Term ends Jun 12, 2035 · High confidence	In force	Term ends Jun 12, 2035	High confidence
US 9,878,918	Product comprising aluminum chlorohydrate particles having specific basicity In force Term ends Sep 11, 2035 · High confidence	In force	Term ends Sep 11, 2035	High confidence
US 10,040,072	Method for Production of Aluminum Chloride Derivatives In force Term ends Oct 20, 2035 · High confidence	In force	Term ends Oct 20, 2035	High confidence
US 10,947,124	Concentrated Aqueous Solutions of Aluminum Chlorohydrate Monohydrate In force Term ends Feb 22, 2036 · High confidence	In force	Term ends Feb 22, 2036	High confidence
US 11,053,143	Stable Concentrated Polyaluminum Chlorosilicate Solutions In force Term ends Jan 22, 2037 · High confidence	In force	Term ends Jan 22, 2037	High confidence
US 11,634,338	Process for Producing Aluminum Chlorohydrate Particles In force Term ends Mar 10, 2037 · High confidence	In force	Term ends Mar 10, 2037	High confidence
US 10,869,459	Sodium Aluminum Sulfate for Use in Animal Litters In force Term ends Jun 27, 2039 · High confidence	In force	Term ends Jun 27, 2039	High confidence

10 of 12 patents shown.

Pro members see all 12.

Pro members: see all 12 patents

Also on record, not counted in the 12: 1 patent ended · 5 applications pending. 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.

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