Term ended Sep 11, 2023 · High confidence
20-year base term ended Sep 11, 2023
Held by CMC Materials LLC
Filed Sep 11, 2003 as application 10/660,379 · Granted Feb 3, 2009
Base term, 20 years from filing
Today
Term ended Sep 11, 2023
2003
2026
Clock starts
Sep 11, 2003
Sep 11, 2003
Term ended
Sep 11, 2023
Sep 11, 2023
Granted
Feb 3, 2009
Feb 3, 2009
base term
after the term ends
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.
3
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Sep 11, 2003, when this application, 10/660,379, was filed | Sep 11, 2023 | 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Sep 11, 2023 | High confidence |
This family
| US 7,485,241 | this patent Sep 2023 | Sep 2023 |
| US 7,754,098 | In force no later than Dec 2026 | no later than Dec 2026 |
2 of 3 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
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 2, 2003 Reel 14023, frame 498 | Schroeder, David J.; Moeggenborg, Kevin J. | Cabot Microelectronics Corporation | Assignment of Assignor's Interest |
| Feb 16, 2012 Reel 27727, frame 275 | Cabot Microelectronics Corporation | Bank of America, N.A., as Administrative Agent | Notice of Security Interest in Patents |
| Nov 16, 2018 Reel 47587, frame 119 | Bank Of America, N.a. | Cabot Microelectronics Corporation | Release of Security Interest |
| Nov 16, 2018 Reel 47588, frame 263 | Cabot Microelectronics Corporation; Qed Technologies International, Inc.; Flowchem LLC; KMG Electronic Chemicals, Inc.; Mpower Specialty Chemicals LLC | Jpmorgan Chase Bank, N.a. | Security Agreement |
| Jan 13, 2021 Reel 54980, frame 681 | Cabot Microelectronics Corporation | CMC Materials, Inc. | Change of Name |
| Jul 6, 2022 Reel 60592, frame 260 | Jpmorgan Chase Bank, N.a. | Cabot Microelectronics Corporation; Qed Technologies International, Inc.; Flowchem LLC; KMG Electronic Chemicals, Inc.; KMG-Bernuth, Inc.; Mpower Specialty Chemicals LLC; Sealweld (USA), Inc.; International Test Solutions, LLC; CMC Materials, Inc. | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | Cabot Microelectronics Corporation | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | Qed Technologies International, Inc. | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | Flowchem LLC | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | KMG Electronic Chemicals, Inc. | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | KMG-Bernuth, Inc. | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | Mpower Specialty Chemicals LLC | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | Sealweld (USA), Inc. | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | International Test Solutions, LLC | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | CMC Materials, Inc. | Release of Security Interest |
| Jul 8, 2022 Reel 60613, frame 72 | Entegris, Inc.; Entegris GP, Inc.; Poco Graphite, Inc.; CMC Materials, Inc.; International Test Solutions, LLC; Qed Technologies International, Inc. | Truist Bank, as Notes Collateral Agent | Security Interest |
| Jul 8, 2022 Reel 60615, frame 1 | CMC Materials, Inc.; International Test Solutions, LLC; Qed Technologies International, Inc. | Morgan Stanley Senior Funding, Inc., as Collateral Agent | Security Interest |
| Nov 8, 2023 Reel 65517, frame 783 | CMC Materials, Inc. | CMC Materials LLC | Change of Name |
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.
Citations
20
later US patents cite this one
That is above the median of utility patents granted in 2009 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.