Patent US3306718A successfully refreshed from Google Patents.
US3306718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive product
Assignee: EIDP Inc
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Filing: 1964-03-16
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Granted: 1967-02-28
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Expires: 1984-03-16
Abstract
No abstract record available.
Inventors
- 👤 Chapin Aurelius Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:00
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
AN ABRASIVE PRODUCT COMPRISING: A BASE LAYER OF A POLYMERIC LINEAR TEREPHTHALIC ACID ESTER FILM; AN INTERMEDIATE COATING ON SAID SURFACE OF A POLYOLEFIN CUSHION LAYER HAVING A THICKNESS OF ONE TO THREE MILS; AND A THIN LAYER OF A THERMOSETTING RESIN COATED ON SAID INTERMEDIATE COATING, SAID RESIN CONTAINING AN ABRASIVE MATERIAL.
Claim 2
Dependent Claim
53 words
AN ABRASIVE PRODUCT COMPRISING: A BASE LAYER OF A POLYMERIC LINEAR TEREPHTHALIC ACID ESTER FILM; AN INTERMEDIATE COATING ON SAID SURFACE OF A POLYOLEFIN CUSHION LAYER HAVING A THICKNESS OF ONE TO THREE MILS; AND A THIN LAYER OF A THERMOSETTING RESIN COATED ON SAID INTERMEDIATE COATING, SAID RESIN CONTAINING AN ABRASIVE MATERIAL.
References Cited (Backward Citations)
US2347662A
Cited
US3044891A
Cited
US3043716A
Cited
US3136614A
Cited
US3043673A
Cited
US3246969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |