US2822254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrile rubber bonded abrasive modified by a diketone
Assignee: Unifrax I LLC
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Filing: 1955-04-22
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Granted: 1958-02-04
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Expires: 1975-04-22
Abstract
No abstract record available.
Inventors
- 👤 George J Goepfert
- 👤 Doenhoff Carl Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:25
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A RUBBER BONDED ABRASIVE ARTICLE COMPRISING A MAJOR PROPORTION OF ABRASIVE GRAIN AND A MINOR PROPORTION OF A BINDER THEREFOR, SAID BINDER COMPRISING ESSENTIALLY OF A COPOLYMER OF A CONJUGATED DIOLEFIN AND A NITRILE SELECTED FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC NITRILE AND A DKIETONE SELECTED FROM THE GROUP CONSISTING OF ALPHA DIKETONES AND NON-ALPHA DIKETONES HAVING A CONJUGATED SYSTEM OF DOUBLE BONDS COMPRISING A C=C LINKAGE AT THE ALPHA-BETA POSITION ON AT LEAST ONE SIDE OF EACH CARHONYL GROUP, THE AMOUNT OF DIKETONE PRESENT BEING IN THE RANGE OF THE MOL EQUIVALENT OF ABOUT 5-50% OF BENZIL BASED ON THE COPOLYMER.
Claim 2
Dependent Claim
104 words
A RUBBER BONDED ABRASIVE ARTICLE COMPRISING A MAJOR PROPORTION OF ABRASIVE GRAIN AND A MINOR PROPORTION OF A BINDER THEREFOR, SAID BINDER COMPRISING ESSENTIALLY OF A COPOLYMER OF A CONJUGATED DIOLEFIN AND A NITRILE SELECTED FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC NITRILE AND A DKIETONE SELECTED FROM THE GROUP CONSISTING OF ALPHA DIKETONES AND NON-ALPHA DIKETONES HAVING A CONJUGATED SYSTEM OF DOUBLE BONDS COMPRISING A C=C LINKAGE AT THE ALPHA-BETA POSITION ON AT LEAST ONE SIDE OF EACH CARHONYL GROUP, THE AMOUNT OF DIKETONE PRESENT BEING IN THE RANGE OF THE MOL EQUIVALENT OF ABOUT 5-50% OF BENZIL BASED ON THE COPOLYMER.
References Cited (Backward Citations)
US2406319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |