161 patents currently held

1 more in force is now held by another company

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

The next term ends in Mar 2035. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Mar 2035

Next term end

136

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026202720282029203020312032203320342035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045

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

Ozone Disinfection Device, Ozone Disinfection System, and Ozone Disinfection Method US 11,000,611

Cited by 15 later US patents, top 10% of utility patents granted in 2021 in our data. Protection runs to 2040.

Ends Jul 2040 · High confidence Also notable

Suction Device for Sucking Obstruction in Respiratory Tract and Use Method Therefor US 11,633,530

Cited by 10 later US patents, top 10% of utility patents granted in 2023 in our data. Protection runs to 2041.

Ends Aug 2041 · High confidence Also notable

Cushion for a Respiratory Mask US D1,036,157

Cited by 9 later US patents, top 10% of design patents granted in 2024 in our data. Protection runs to 2039.

Ends Jul 2039 · 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 Feb 22, 2027
The maintenance fee for Ozone Disinfection Device, Ozone Disinfection System, and Ozone Disinfection Method (US 11,730,842) comes due Feb 22, 2027. Unpaid by Aug 23, 2027, it lapses early.
1 fee due Jul 16, 2027
The maintenance fee for Breathing Mask with a Foam Pad (US 11,872,346) comes due Jul 16, 2027. Unpaid by Jan 18, 2028, it lapses early.
2 fees due Nov 7, 2027

Which patents, and when each one lapses · Pro

Recent changes

26 of the patents on this record were granted since Aug 16, 2026

What they patent

The 5 largest of its 136 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Ozone Disinfection Device, Ozone Disinfection System, and Ozone Disinfection Method	4 in force	to Dec 2040
Suction Device for Sucking Obstruction in Respiratory Tract and Use Method Therefor	3 in force	to Jun 2042
Mouthguard	3 in force	to Sep 2041
Respiratory Obstruction Removal Device	2 in force	to Nov 2043
Respiratory Mask with Sponge and Fabric	2 in force	to Nov 2043

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US D879,946	Mask Liner In force Term ends Mar 31, 2035 · High confidence	In force	Term ends Mar 31, 2035	High confidence
US D938,004	Air Filter Frame Set In force Term ends Dec 7, 2036 · High confidence	In force	Term ends Dec 7, 2036	High confidence
US D960,458	Cover for Face Mask In force Term ends Aug 9, 2037 · High confidence	In force	Term ends Aug 9, 2037	High confidence
US D1,006,987	Connector In force Term ends Dec 5, 2038 · High confidence	In force	Term ends Dec 5, 2038	High confidence
US D1,007,671	Mask In force Term ends Dec 12, 2038 · High confidence	In force	Term ends Dec 12, 2038	High confidence
US D1,011,515	Strap for Face Mask In force Term ends Jan 16, 2039 · High confidence	In force	Term ends Jan 16, 2039	High confidence
US D1,013,155	Connector In force Term ends Jan 30, 2039 · High confidence	In force	Term ends Jan 30, 2039	High confidence
US D1,013,860	Connector In force Term ends Feb 6, 2039 · High confidence	In force	Term ends Feb 6, 2039	High confidence
US D1,014,735	Mask Frame In force Term ends Feb 13, 2039 · High confidence	In force	Term ends Feb 13, 2039	High confidence
US D1,017,503	Tank In force Term ends Mar 12, 2039 · High confidence	In force	Term ends Mar 12, 2039	High confidence

10 of 161 patents shown.

Pro members see all 161.

Pro members: see all 161 patents

Also on record, not counted in the 161: 1 patent in force now held by others · 29 applications pending · 2 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.

Export every term end as CSV · Pro

Dcstar Inc.