Patent US2552500A successfully refreshed from Google Patents.
US2552500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive articles bonded with a methyl pentadiene synthetic elastomer and method of manufacturing the same
Assignee: Unifrax I LLC
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Filing: 1946-08-14
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Granted: 1951-05-08
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Expires: 1966-08-14
Abstract
No abstract record available.
Inventors
- 👤 Doenhoff Carl Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:42
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
AN ABRASIVE ARTICLE COMPRISING ABRASIVE GRAINS AND A BOND THEREFOR COMPRISING ESSENTIALLY A HARD-VULCANIZED SYNTHETIC ELASTOMER SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF A METHYL PENTADIENE AND BINARY COPOLYMERS OF A MAJOR PROPORTION OF A METHYL PENTADIENE AND A MINOR PROPORTION OF BUTADIENE.
Claim 2
Dependent Claim
44 words
AN ABRASIVE ARTICLE COMPRISING ABRASIVE GRAINS AND A BOND THEREFOR COMPRISING ESSENTIALLY A HARD-VULCANIZED SYNTHETIC ELASTOMER SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF A METHYL PENTADIENE AND BINARY COPOLYMERS OF A MAJOR PROPORTION OF A METHYL PENTADIENE AND A MINOR PROPORTION OF BUTADIENE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |