239 patents currently held
28 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.
1 more record may belong here and awaits a decision; it is not counted.
The next term ends in Apr 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
28
Ending by 2030
Apr 2027
Next term end
166
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 15, 2026 · includes USPTO assignment & status data published Nov 15, 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 no later than Oct 2031 · Medium confidence
Also notable
Ends Aug 2031 · High confidence
Also notable
Ends Aug 2035 · High confidence
Dendrimers for Sustained Release of Compounds
US 10,463,609
Cited by 62 later US patents, top 5% of utility patents granted in 2019 in our data. Protection runs to 2031. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.
Thermally Stable Volatile Precursors
US 9,255,327
Cited by 76 later US patents, top 5% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2031.
Systems and Methods to Assess Microbiomes and Treatments Thereof
US 10,253,377
Cited by 126 later US patents, top 5% of utility patents granted in 2019 in our data, and renewed at 2 of 3 maintenance windows. Protection runs to 2035.
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.
- 3 fees due Nov 19 to 30, 2026 · next Nov 19
- 8 fees due Dec 2 to 27, 2026 · next Dec 2
- 6 fees due Jan 2 to 28, 2027 · next Jan 2
- 4 fees due Feb 6 to 27, 2027 · next Feb 6
- 2 fees due Mar 5 to 10, 2027 · next Mar 5
- 8 fees due Apr 1 to 30, 2027 · next Apr 1
- 4 fees due May 3 to 24, 2027 · next May 3
- 5 fees due Jun 1 to 15, 2027 · next Jun 1
- 4 fees due Jul 7 to 19, 2027 · next Jul 7
- 6 fees due Aug 2 to 20, 2027 · next Aug 2
- 4 fees due Sep 17 to 26, 2027 · next Sep 17
- 4 fees due Oct 12 to 28, 2027 · next Oct 12
- 2 fees due Nov 5 to 12, 2027 · next Nov 5
Recent changes
- Sep 17Assignment recorded on 1 record: Sobel, Jack D. to Wayne State University Recorded Sep 17, 2026, executed Oct 30, 2023. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76046, frame 216.
- 8 of the patents on this record were granted since Aug 17, 2026
- 2 terms have ended since Aug 17, 2026
What they patent
The 5 largest of its 166 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Zno Nanoparticle Catalysts for Use in Biodiesel Production and Method of Making | 16 in force | to Jul 2035 |
| Light Therapy Treatment | 5 in force | to Oct 2031 |
| System and Method for Ionization of Molecules for Mass Spectrometry and Ion Mobility Spectrometry | 4 in force | to Jul 2032 |
| Protein-Induced Pluripotent Cell Technology and Uses Thereof | 4 in force | to May 2032 |
| Method and Composition for a Protein Transduction Technology and Its Applications | 4 in force | to Apr 2030 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,217,086 | Method of Fabricating Transparent Anti-Reflective Article In force · High confidence | In force | High confidence | |
| US 9,730,981 | Restoration of Visual Responses by in Vivo Delivery of Rhodopsin Nucleic Acids In force · High confidence | In force | High confidence | |
| US 11,883,463 | Restoration of Visual Responses by in Vivo Delivery of Rhodopsin Nucleic Acids In force · High confidence | In force | High confidence | |
| US 7,837,944 | Device for Separating and Concentrating Microfluidic Particles In force · High confidence | In force | High confidence | |
| US 7,994,602 | Titanium Dioxide Thin Film Systems In force · High confidence | In force | High confidence | |
| US 8,952,019 | Methods of Using Selective Chemotherapeutic Agents for Targeting Tumor Cells In force · Medium confidence | In force | Medium confidence | |
| US 7,534,996 | Velocity Imaging Tandem Mass Spectrometer In force · High confidence | In force | High confidence | |
| US 7,709,054 | Particle-Rod Nano Structures and Method of Forming Same by Spin Coating In force · High confidence | In force | High confidence | |
| US 7,915,433 | Tri-Substituted 2-Benzhydryl 5-Benzlamino-TETRAHYDRO-PYRAN-4-OL and 6-Benzhydryl-4-Benzylamino-TETRAHYDRO-PYRAN-3-Olanalogues, and Novel 3,6 Disubstituted Pyran Derivatives In force · High confidence | In force | High confidence | |
| US 9,696,315 | Method and Composition for a Protein Transduction Technology and Its Applications In force · High confidence | In force | High confidence |
Also on record, not counted in the 239: 28 patents in force now held by others · 141 patents ended · 97 applications pending · 162 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.