Patent US2733138A successfully refreshed from Google Patents.
US2733138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agricultural residue abrasives
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
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Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:15
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1409
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
AN ABRASIVE COMPOSITION ESSENTIALLY COMPRISING AN AGRICULTURAL RESIDUE GRIT MATERIAL TAKEN FROM THE GROUP CONSISTING OF NUT SHELLS, FRUIT PIT SHELLS, GRAIN HULLS, AND CORNCOB MATERIAL BONDED IN A RESIN MATRIX, SAID GRIT MATERIAL BEING AT LEAST 65% OF SAID COMPOSITION AND BEING SUBSTANTIALLY THE SOLE ABRASIVE MATERIAL IN SAID COMPOSITION, SAID GRIT MATERIAL BEING DISCRETE GRANULAR PARTICLES OF ESSENTIALLY ANGULAR SHAPE AND BEING CHEMICALLY UNALTERED.
Claim 2
Dependent Claim
66 words
AN ABRASIVE COMPOSITION ESSENTIALLY COMPRISING AN AGRICULTURAL RESIDUE GRIT MATERIAL TAKEN FROM THE GROUP CONSISTING OF NUT SHELLS, FRUIT PIT SHELLS, GRAIN HULLS, AND CORNCOB MATERIAL BONDED IN A RESIN MATRIX, SAID GRIT MATERIAL BEING AT LEAST 65% OF SAID COMPOSITION AND BEING SUBSTANTIALLY THE SOLE ABRASIVE MATERIAL IN SAID COMPOSITION, SAID GRIT MATERIAL BEING DISCRETE GRANULAR PARTICLES OF ESSENTIALLY ANGULAR SHAPE AND BEING CHEMICALLY UNALTERED.
References Cited (Backward Citations)
US449217A
Cited
US1598328A
Cited
US1750499A
Cited
US2319182A
Cited
US2375823A
Cited
US2378630A
Cited
US2412599A
Cited
US2701192A
Cited
US2701191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |