6 patents currently held
27 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.
The next term ends in Jun 2031. from the record
Of the 27 now held by other companies, 20 name International N and H Denmark APS as their current owner, and 7 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Jun 2031
Next term end
4
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 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
Ends Jun 2031 · High confidence
Also notable
Ends May 2035 · High confidence
Also notable
Ends Oct 2034 · High confidence
Lignocellulose Conversion Processes and Products
US 9,512,495
The most cited patent in this portfolio, cited by 39 later US patents, top 10% of utility patents granted in 2016 in our data. Protection runs to 2031. A terminal disclaimer caps this term to an earlier patent's.
Hydrogenation of Oxygenated Molecules from Biomass Refining
US 10,189,764
The newest of the three, granted 2019. It anchors the portfolio to 2035, later than anything else here. A terminal disclaimer caps this term to an earlier patent's.
Methods for Extracting and Converting Hemicellulose Sugars
US 10,138,217
Granted 2018. Computed term ends 2034.
Formerly held, still cited
Notable
Ends Jun 2031 · High confidence
The most cited patent in this portfolio, cited by 65 later US patents, top 10% of utility patents granted in 2016 in our data. Protection runs to 2031.
now held by International N&H Denmark APS
Also notable
Ends Oct 2032 · High confidence
Cited by 37 later US patents, top 10% of utility patents granted in 2017 in our data, and renewed at every maintenance window due so far. Protection runs to 2032. A terminal disclaimer caps this term to an earlier patent's.
now held by International N&H Denmark APS
Also notable
Ends Jul 2033 · High confidence
Cited by 28 later US patents, top 25% of utility patents granted in 2017 in our data, and renewed at every maintenance window due so far. Protection runs to 2033.
now held by International N&H Denmark APS
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 6, 2026The maintenance fee for Lignocellulosic Conversion Processes and Products (US 11,667,981) comes due Dec 6, 2026. Unpaid by Jun 7, 2027, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.
| Lignocellulose Conversion Processes and Products | 3 in force | to Jun 2031 |
| Methods of Refining a Lignocellulosic Hydrolysate | 1 in force | to Jul 2037 |
| Hydrogenation of Oxygenated Molecules from Biomass Refining | 1 in force | to May 2035 |
| Methods for Extracting and Converting Hemicellulose Sugars | 1 in force | to Oct 2034 |
Patents held now
Soonest term end first.
Showing 1 to 6 of 6
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,512,495 | Lignocellulose Conversion Processes and Products In force · High confidence | In force | High confidence | |
| US 10,876,178 | Lignocellulosic Conversion Processes and Products In force · High confidence | In force | High confidence | |
| US 11,667,981 | Lignocellulosic Conversion Processes and Products In force · High confidence | In force | High confidence | |
| US 10,138,217 | Methods for Extracting and Converting Hemicellulose Sugars In force · High confidence | In force | High confidence | |
| US 10,189,764 | Hydrogenation of Oxygenated Molecules from Biomass Refining In force · High confidence | In force | High confidence | |
| US 10,767,237 | Methods of Refining a Lignocellulosic Hydrolysate In force · High confidence | In force | High confidence |
Also on record, not counted in the 6: 27 patents in force now held by others · 6 patents ended · 1 application pending · 34 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.