Also listed on Renessenz LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Apr 19, 2030 · High confidence
20-year base term ends Apr 19, 2030
Held by Ameriterpenes, LLC
Filed Apr 19, 2010 as application 12/799,118 · Granted Dec 14, 2010
Base term, 20 years from filing
Today
2010
2030
Clock starts
Apr 19, 2010
Apr 19, 2010
Term ends
Apr 19, 2030
Apr 19, 2030
Granted
Dec 14, 2010
Dec 14, 2010
base term
fee events
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Apr 19, 2010, when this application, 12/799,118, was filed | Apr 19, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 19, 2030 | High confidence |
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Apr 19, 2010 Reel 24299, frame 71 | Kolomeyer, Gennadiy G.; Ferone, Douglas A. | Millennium Specialty Chemicals, Inc. | Assignment of Assignor's Interest |
| May 13, 2010 Reel 24382, frame 37 | Lyondellbasell Flavors & Fragrances, LLC | Deutsche Bank Trust Company Americas, as Collateral Agent | Security Agreement |
| May 17, 2010 Reel 24398, frame 47 | Lyondellbasell Flavors & Fragrances, LLC | UBS AG, Stamford Branch, as Collateral Agent | Security Agreement |
| May 18, 2010 Reel 24397, frame 898 | Lyondellbasell Flavors & Fragrances, LLC | Citibank, N.A., as Administrative Agent | Security Agreement |
| May 19, 2010 Reel 24402, frame 727 | Lyondellbasell Flavors & Fragrances, LLC | Wells Fargo Bank, National Association, as Collateral Agent | Security Agreement |
| Dec 23, 2010 Reel 25562, frame 245 | Lyondellbasell Flavors & Fragrances, LLC | Wells Fargo Bank, National Association, as Administrative Agent | Security Agreement |
| Dec 23, 2010 Reel 25563, frame 397 | Deutsche Bank Trust Company Americas, as Collateral Agent | Lyondellbasell Flavors & Fragrances, LLC | Release of Security Interest |
| Dec 23, 2010 Reel 25563, frame 717 | Citibank, N.A., as Administrative Agent | Lyondellbasell Flavors & Fragrances, LLC | Release of Security Interest |
| Dec 23, 2010 Reel 25563, frame 777 | UBS AG, Stamford Branch, as Collateral Agent | Lyondellbasell Flavors & Fragrances, LLC | Release of Security Interest |
| Dec 23, 2010 Reel 25563, frame 798 | Wells Fargo Bank, National Association, as Collateral Agent | Lyondellbasell Flavors & Fragrances, LLC | Release of Security Interest |
| Jan 11, 2011 Reel 25619, frame 24 | Millennium Specialty Chemicals Inc. | Lyondellbasell Flavors & Fragrances, LLC | Assignment of Assignor's Interest |
| May 9, 2011 Reel 26246, frame 863 | Lyondellbasell Flavors & Fragrances, LLC | Renessenz, LLC | Change of Name |
| Feb 1, 2016 Reel 37631, frame 376 | Wells Fargo Bank, National Association | Pinova Holdings, Inc.; Renessenz LLC | Release of Security Interest |
| Feb 1, 2016 reel/frame not recorded | Wells Fargo Bank, National Association | Pinova Holdings, Inc. | Release of Security Interest |
| Feb 1, 2016 reel/frame not recorded | Wells Fargo Bank, National Association | Renessenz LLC | Release of Security Interest |
| Aug 20, 2026 Reel 75725, frame 837 | Renessenz LLC; Symrise, Inc. | Symrise, Inc. | Merger and Change of Name |
| Aug 20, 2026 Reel 75725, frame 968 | Symrise Inc. | Ameriterpenes, LLC | Assignment of Assignor's Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
What's changing
Apr 2030
Term ends Apr 19, 2030. No further fees fall due before then
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2010 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.