Patent US3071456A successfully refreshed from Google Patents.
US3071456A
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Assignee: Individual
•
Filing: 1956-02-08
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Granted: 1963-01-01
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Expires: 1976-02-08
Abstract
No abstract record available.
Inventors
- 👤 William D Cheesman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:01
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/12; B24B31/14; C; C23; C23C; C23C22/00; C23C22/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A METHOD OF TREATING METAL ARTICLES CONTAINING SURFACE IRREGULARITIES COMPRISING REMOVING SAID IRREGULARITIES BY TUMBLING SAID ARTICLES IN A LIQUID AQUEOUS MEDIUM CONTAINING AT LEAST FOUR POUNDS OF A PHOSPHORIC ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF A PHOSPHORIC ACID AND A WATER-SOLUBLE ACID PHOSPHATE PER 1000 SQUARE FEET OF SURFACE AREA OF SAID ARTICLES WHEREBY A THIN ADHERENT SURFACE FILM OF A FRIABLE COMPOUND OF A METAL CONSISTUENT OF SAID ARTICLE IS FORMED THEREON AND IS SUBSEQUENTLY BROKEN AWAY AT POINTS OF FORCEFUL TUMBLING CONTACT.
Claim 2
Independent Claim
87 words
A METHOD OF TREATING METAL ARTICLES CONTAINING SURFACE IRREGULARITIES COMPRISING REMOVING SAID IRREGULARITIES BY TUMBLING SAID ARTICLES IN A LIQUID AQUEOUS MEDIUM CONTAINING AT LEAST FOUR POUNDS OF A PHOSPHORIC ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF A PHOSPHORIC ACID AND A WATER-SOLUBLE ACID PHOSPHATE PER 1000 SQUARE FEET OF SURFACE AREA OF SAID ARTICLES WHEREBY A THIN ADHERENT SURFACE FILM OF A FRIABLE COMPOUND OF A METAL CONSISTUENT OF SAID ARTICLE IS FORMED THEREON AND IS SUBSEQUENTLY BROKEN AWAY AT POINTS OF FORCEFUL TUMBLING CONTACT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |