Also listed on Soraa, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Nov 15, 2026 · High confidence
20-year base term ended Jan 25, 2025
Held by SLT Technologies, Inc.
Filed Jan 25, 2005 as application 11/042,858 · Granted Apr 27, 2010
Base term plus 659 days of patent term adjustment (USPTO delay)
Today
2005
2026
Clock starts
Jan 25, 2005
Jan 25, 2005
Term ends
Nov 15, 2026
Nov 15, 2026
Granted
Apr 27, 2010
Apr 27, 2010
base term
patent term adjustment
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
659
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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 runs 659 days past its 20-year base term on 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 Jan 25, 2005, when this application, 11/042,858, was filed | Jan 25, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +659 days, USPTO patent term adjustment record | Nov 15, 2026 | 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 | Nov 15, 2026 | 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 |
|---|---|---|---|
| Jan 25, 2005 Reel 16223, frame 410 | D'evelyn, Mark Philip; Giddings, Robert Arthur; Sharifi, Fred; Dey, Subhrajit; Hong, Huicong; Kapp, Joseph Alexander; Khare, Ashok Kumar | General Electric Company | Assignment of Assignor's Interest |
| Jul 3, 2007 Reel 19511, frame 166 | Momentive Performance Materials Holdings Inc.; Momentive Performance Materials GmbH & Co. KG; Momentive Performance Materials Japan Holdings GK | JPMorgan Chase Bank, N.A. as Administrative Agent | Security Agreement |
| Aug 8, 2007 Reel 19666, frame 914 | General Electric Company | Momentive Performance Materials Inc. | Assignment of Assignor's Interest |
| Jul 1, 2009 Reel 22902, frame 461 | Momentive Performance Materials, Inc.; Juniper Bond Holdings I LLC; Juniper Bond Holdings II LLC; Juniper Bond Holdings III LLC; Juniper Bond Holdings IV LLC; Momentive Performance Materials China SPV Inc.; Momentive Performance Materials Quartz, Inc.; Momentive Performance Materials South America Inc.; Momentive Performance Materials USA Inc.; Momentive Performance Materials Worldwide Inc.; MPM Silicones, LLC | The Bank of New York Mellon Trust Company, N.A., as Collateral Trustee | Security Agreement |
| May 31, 2012 Reel 28344, frame 208 | Momentive Performance Materials Inc. | The Bank of New York Mellon Trust Company, N.A. | Security Agreement |
| Apr 3, 2013 Reel 30185, frame 1 | Momentive Performance Materials Inc. | The Bank of New York Mellon Trust Company, N.A. | Patent Security Agreement |
| Apr 29, 2013 Reel 30311, frame 343 | Momentive Performance Materials Inc. | Jpmorgan Chase Bank, N.a. | Security Agreement |
| Oct 27, 2014 Reel 34066, frame 662 | Momentive Performance Materials Inc. | The Bank of New York Mellon Trust Company, N.A., as Collateral Agent | Security Interest |
| Oct 30, 2014 Reel 34113, frame 331 | The Bank of New York Mellon Trust Company, N.A. | Momentive Performance Materials Inc. | Termination and Release of Security Interest in Patent Rights |
| Mar 6, 2015 Reel 35136, frame 457 | The Bank of New York Mellon Trust Company, N.A. as Collateral Agent | Bokf, NA, as Successor Collateral Agent | Notice of Change of Collateral Agent - Assignment of Security Interest in Intellectual Property |
| Mar 6, 2015 Reel 35137, frame 263 | The Bank of New York Mellon Trust Company, N.A. as Collateral Agent | Bokf, NA, as Successor Collateral Agent | Notice of Change of Collateral Agent - Assignment of Security Interest in Intellectual Property - Second Lien |
| Jul 26, 2016 Reel 39263, frame 177 | Jpmorgan Chase Bank, N.a. | Momentive Performance Materials Inc. | Release of Security Interest |
| Jul 26, 2016 Reel 39263, frame 831 | Bokf, Na | Momentive Performance Materials Inc. | Release of Security Interest |
| Nov 1, 2016 Reel 40186, frame 212 | Momentive Performance Materials, Inc. | Soraa Inc. | Assignment of Assignor's Interest |
| Oct 23, 2017 Reel 44636, frame 918 | Soraa, Inc. | SLT Technologies, Inc. | Assignment of Assignor's Interest |
| May 15, 2019 Reel 49249, frame 271 | Bokf, Na | Momentive Performance Materials Inc. | Release of Security Interest |
| May 21, 2019 Reel 50304, frame 555 | Jpmorgan Chase Bank, N.a. | Momentive Performance Materials Inc. | Termination and Release of Security Interest in Patents |
| Nov 11, 2020 Reel 54387, frame 1 | JPMorgan Chase Bank, N.A., as Administrative Agent | Momentive Performance Materials Inc.; Momentive Performance Materials GmbH & Co. KG; Momentive Performance Materials Japan Holdings GK | Release of Security Interest |
| Nov 11, 2020 reel/frame not recorded | JPMorgan Chase Bank, N.A., as Administrative Agent | Momentive Performance Materials Inc. | Release of Security Interest |
| Nov 11, 2020 reel/frame not recorded | JPMorgan Chase Bank, N.A., as Administrative Agent | Momentive Performance Materials GmbH & Co. KG | Release of Security Interest |
| Nov 11, 2020 reel/frame not recorded | JPMorgan Chase Bank, N.A., as Administrative Agent | Momentive Performance Materials Japan Holdings GK | Release of Security Interest |
| Dec 24, 2020 Reel 54883, frame 855 | The Bank of New York Mellon Trust Company, N.A., as Collateral Agent | Momentive Performance Materials Inc. | 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.
What's changing
Nov 2026
Term ends Nov 15, 2026. No further fees fall due before then
Note
The 659 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
201
later US patents cite this one
That is top 5% 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.