Patent US2851168A successfully refreshed from Google Patents.
Patent US2622047A successfully refreshed from Google Patents.
US2622047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ligno-cellulose aggregate and blast cleaning process employing the same
Assignee: Agrashell Inc
•
Filing: 1948-03-01
•
Granted: 1952-12-16
•
Expires: 1968-03-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Ayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:29
CPC Classifications
B; B24; B24C; B24C11/00; Y; Y10; Y10T; Y10T29/00; Y10T29/45; Y10T29/4533; Y10T29/4544
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR REMOVING COATINGS AND DEPOSITS FROM SURFACES OF METALS AND OTHER MATERIALS WHICH COMPRISES BOMBARDING THE SAME WITH A HIGH VELOCITY COMPRESSED FLUID STRAM CONTAINING AN AGGREGATE COMPOSED OF ROUNDED PARTICLES OF A LIGNO-CELLULOSE MATERIAL HAVING A DENSITY OF AT LEAST 1.20, AND PARTICLES BEING OF MIXED SIZES OF 12-40 MESH A SUBSTANTIAL PROPORTION OF WHICH IS BETWEEN 12 AND 18 MESH AND ANOTHER SUBSTANTIAL PROPORTION OF WHICH IS BETWEEN 18 AND 40 MESH.
Claim 2
Dependent Claim
76 words
A PROCESS FOR REMOVING COATINGS AND DEPOSITS FROM SURFACES OF METALS AND OTHER MATERIALS WHICH COMPRISES BOMBARDING THE SAME WITH A HIGH VELOCITY COMPRESSED FLUID STRAM CONTAINING AN AGGREGATE COMPOSED OF ROUNDED PARTICLES OF A LIGNO-CELLULOSE MATERIAL HAVING A DENSITY OF AT LEAST 1.20, AND PARTICLES BEING OF MIXED SIZES OF 12-40 MESH A SUBSTANTIAL PROPORTION OF WHICH IS BETWEEN 12 AND 18 MESH AND ANOTHER SUBSTANTIAL PROPORTION OF WHICH IS BETWEEN 18 AND 40 MESH.
References Cited (Backward Citations)
US1116776A
Cited
US1588768A
Cited
US1907411A
Cited
US2185262A
Cited
US2359323A
Cited
US2421806A
Cited
US2462982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |