US2830884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive composition
Assignee: C H B MORRISON
•
Filing: 1954-04-05
•
Granted: 1958-04-15
•
Expires: 1974-04-05
Abstract
No abstract record available.
Inventors
- 👤 William D Smiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:17
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A FINISHING COMPOSITION FOR GLASS CONSISTING ESSENTIALLY OF 50 TO 80% BY VOLUME OF PUMICITE AND ABOUT 20 TO 50% OF A HARDER ABRASIVE HAVING PARTICLES WHICH ARE SUBSTANTIALLY EQUI-DIMENSIONAL SELECTED FROM THE CLASS
Claim 2
Dependent Claim
34 words
A FINISHING COMPOSITION FOR GLASS CONSISTING ESSENTIALLY OF 50 TO 80% BY VOLUME OF PUMICITE AND ABOUT 20 TO 50% OF A HARDER ABRASIVE HAVING PARTICLES WHICH ARE SUBSTANTIALLY EQUI-DIMENSIONAL SELECTED FROM THE CLASS
References Cited (Backward Citations)
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US2093106A
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US2053613A
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US2108405A
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US2248472A
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US2296690A
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US2334578A
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US2449253A
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US2554070A
Cited
US2569323A
Cited
US2682460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |