Also listed on Material Sciences Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded Dec 27, 2021 (Bank of Montreal).
Term ends Feb 15, 2040 · High confidence
20-year base term ends Feb 15, 2040
Held by Productive Research LLC and Material Sciences Corporation
Filed Feb 15, 2020 as application 16/792,232 · Granted May 24, 2022
Base term, 20 years from filing
Today
2020
2040
Clock starts
Feb 15, 2020
Feb 15, 2020
Term ends
Feb 15, 2040
Feb 15, 2040
Granted
May 24, 2022
May 24, 2022
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.
1 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. 1 of 3 maintenance fees is paid so far. 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 Feb 15, 2020, when this application, 16/792,232, was filed | Feb 15, 2040 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 15, 2040 | 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 |
|---|---|---|---|
| Oct 13, 2020 Reel 54043, frame 152 | Bortell, Peter Isaac; Tullis, Bryan Joseph | Productive Research LLC; Material Sciences Corporation | Assignment of Assignor's Interest |
| Oct 13, 2020 reel/frame not recorded | Bortell, Peter Isaac; Tullis, Bryan Joseph | Productive Research LLC | Assignment of Assignor's Interest |
| Oct 13, 2020 reel/frame not recorded | Bortell, Peter Isaac; Tullis, Bryan Joseph | Material Sciences Corporation | Assignment of Assignor's Interest |
| Dec 27, 2021 Reel 58485, frame 832 | Material Sciences Corporation; Material Sciences Corporation, Engineered Materials and Solutions Group, Inc. | Bank Of Montreal, As Administrative Agent | Security Interest |
| Mar 14, 2025 Reel 70520, frame 1 | Material Sciences Corporation; Material Sciences Corporation, Engineered Materials and Solutions Group, Inc.; Continuous Colour Coat Limited | TCW Asset Management Company LLC, as Agent | Security Interest |
| Nov 3, 2026 reel/frame not recorded | TCW Asset Management Company LLC | Material Sciences Corporation | Release of Security Interest |
| Nov 3, 2026 reel/frame not recorded | TCW Asset Management Company LLC | Material Sciences Corporation, Engineered Materials and Solutions Group, Inc. | Release of Security Interest |
| Nov 3, 2026 reel/frame not recorded | TCW Asset Management Company LLC | Continuous Colour Coat Limited | Release of Security Interest |
| Nov 3, 2026 Reel 76619, frame 782 | TCW Asset Management Company LLC | Material Sciences Corporation; Material Sciences Corporation, Engineered Materials and Solutions Group, Inc.; Continuous Colour Coat Limited | Release of Security 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Feb 2040
Term ends Feb 15, 2040. Maintenance fees still fall due before then
Citations
2
later US patents cite this one
That is above the median of utility patents granted in 2022 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.