US3057765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method for milling stainless steel and nickel base alloys
Assignee: Motors Liquidation Co
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Filing: 1959-08-18
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Granted: 1962-10-09
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Expires: 1979-08-18
Abstract
No abstract record available.
Inventors
- 👤 Boda Mitchell A La
- 👤 Charles R Wiese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:05
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/16; C23F1/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
THE METHOD OF CHEMICALLY MACHINING A PART OF A METAL SELECTED FROM THE GROUP CONSISTING OF STAINLESS STEEL AND NICKEL BASE ALLOY, SAID METHOD COMPRISING APPLYING TO SAID PART AN AQUEOUS BATH SOLUTION CONTAINING THE EQUIVALENT OF ABOUT 14% TO 18% OF A 42* BAUME'' AQUEOUS FERRIC CHLORIDE SOLUTION, ABOUT 42% TO 52% CONCENTRATED HYDROCHLORIC ACID, ALL PROPORTIONS BY VOLUME, AND SUFFICIENT ANTIMONY TRICHLORIDE TO AT LEAST MAINTAIN SURFACE SMOOTHNESS AND ADDING NITRIC ACID TO SAID SOLUTION WHILE SAID SOLUTION IS IN CONTACT WITH SAID PART TO REGULATE THE RATE OF REACTION OF SAID SOLUTION WITH SAID PART.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |