CMC Materials, Inc.
6 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.
Recorded under 2 name spellings.
Previously recorded as Cabot Microelectronics Corporation (to 2020)
33
Ending by 2030
Dec 2026
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
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.
- 3 fees due Dec 11 to 30, 2026 · next Dec 11
- 3 fees due Jan 7 to 23, 2027 · next Jan 7
- 1 fee due Feb 15, 2027The maintenance fee for CMP Composition Including a Novel Abrasive (US 11,725,116) comes due Feb 15, 2027. Unpaid by Aug 16, 2027, it lapses early.
- 4 fees due Mar 8 to 17, 2027 · next Mar 8
- 4 fees due Apr 13 to 30, 2027 · next Apr 13
- 4 fees due May 7 to 26, 2027 · next May 7
- 7 fees due Jun 15 to 30, 2027 · next Jun 15
- 3 fees due Jul 19, 2027
- 2 fees due Aug 2 to 18, 2027 · next Aug 2
- 6 fees due Sep 1 to 29, 2027 · next Sep 1
- 7 fees due Oct 5 to 14, 2027 · next Oct 5
- 5 fees due Nov 3 to 12, 2027 · next Nov 3
Recent changes
- 1 of the patents on this record was granted since Aug 16, 2026
- 1 term has ended since Aug 16, 2026
Patents held now
Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,754,098 | Chemical-Mechanical Polishing Composition and Method for Using the Same In force · Medium confidence | In force | Medium confidence | |
| US 7,897,061 | Compositions and Methods for CMP of Phase Change Alloys In force · High confidence | In force | High confidence | |
| US 8,715,035 | Customized Polishing Pads for CMP and Methods of Fabrication and Use Thereof In force · Medium confidence | In force | Medium confidence | |
| US 7,955,519 | Composition and Method for Planarizing Surfaces In force · High confidence | In force | High confidence | |
| US 8,497,209 | Oxidation-Stabilized CMP Compositions and Methods In force · Medium confidence | In force | Medium confidence | |
| US 8,623,767 | Method for Polishing Aluminum/Copper and Titanium in Damascene Structures In force · High confidence | In force | High confidence | |
| US 8,435,421 | Metal-Passivating CMP Compositions and Methods In force · High confidence | In force | High confidence | |
| US 8,597,540 | Compositions for Polishing Silicon-Containing Substrates In force · High confidence | In force | High confidence | |
| US 7,998,866 | Silicon Carbide Polishing Method Utilizing Water-Soluble Oxidizers In force · Medium confidence | In force | Medium confidence | |
| US 9,617,450 | Polishing Composition and Method Utilizing Abrasive Particles Treated with an Aminosilane In force · High confidence | In force | High confidence |
Also on record, not counted in the 182: 6 patents in force now held by others · 19 lapsed for an unpaid fee · 75 ended at full term. List them
Sources and methods
Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand.
How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
Published applications
US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.
12 pending · 9 abandoned · 4 no status recorded