Five patents currently held, every record listed here
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Jan 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
2
Ending by 2030
Jan 2027
Next term end
4
Patent families
When these terms end
Each bar runs from grant to computed term end. 2009 to 2042.20162023203020372042
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 Jan 2027 · High confidence
Also notable
Ends Apr 2040 · High confidence
Also notable
Ends Feb 2029 · High confidence
Collapsible Patient Isolation Pod
US 7,503,890
The most cited patent in this portfolio, cited by 33 later US patents, top 25% of utility patents granted in 2009 in our data. Protection runs to 2027.
Modular Powered Air Purifying Respirator System
US 11,291,869
The newest of the three, granted 2022. It anchors the portfolio to 2040, later than anything else here.
Partition System
US 7,841,027
Renewed at every maintenance window since the 2010 grant; no more fees are due before its term ends in 2029.
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 1, 2027The maintenance fee for Conformal Filter (US 11,712,589) comes due Feb 1, 2027. Unpaid by Aug 2, 2027, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
The 2 largest of its 4 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Modular Powered Air Purifying Respirator System | 2 in force | to Apr 2040 |
| Collapsible Patient Isolation Pod | 1 in force | to Jan 2027 |
Patents held now
Soonest term end first.
Showing 1 to 5 of 5
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,503,890 | Collapsible Patient Isolation Pod In force · High confidence | In force | High confidence | |
| US 7,841,027 | Partition System In force · High confidence | In force | High confidence | |
| US 12,311,205 | Modular Powered Air Purifying Respirator System In force · High confidence | In force | High confidence | |
| US 11,291,869 | Modular Powered Air Purifying Respirator System In force · High confidence | In force | High confidence | |
| US 11,712,589 | Conformal Filter In force · High confidence | In force | High confidence |
Also on record, not counted in the 5: 25 patents ended · 5 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.