Patent US4072677A successfully refreshed from Google Patents.
Patent US3205105A successfully refreshed from Google Patents.
US3205105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting cleaning
Assignee: Ford Motor Co
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Filing: 1963-03-11
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Granted: 1965-09-07
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Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Oster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:01
CPC Classifications
B; B22; B22D; B22D31/00; C; C23; C23F; C23F1/00; C23F1/10; C23F1/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988; Y10T29/49989
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE PROCESS OF REMOVING FINS FROM A FERROUS OBJECT COMPRISING EXPOSING SUCH OBJECT ND FINS TO ELEMENTAL CHLORINE WHILE SAID FINS ARE HEATED SUFFICIENTLY TO CAUSE THEM TO REACT EXOTHERMICALLY WITH THE ELEMENTAL CHLORINE AT AN EXPONENTIALLY INCREASING RATE WHILE MAINTAINING THE REMAINDER OF THE OBJECT AT A TEMPERATURE AT WHICH SUCH EXPONENTIALLY INCREASING RATE OF REACTION WITH ELEMENTAL CHLORINE DOES NOT OCCUR AND TERMINATING THE EXPOSURE OF THE OBJECT TO THE ELEMENTAL CHLORINE WHEN THE FINS HAVE BEEN SUBSTANTIALLY CONVERTED TO FERRIC CHLORIDE.
Claim 2
Dependent Claim
84 words
THE PROCESS OF REMOVING FINS FROM A FERROUS OBJECT COMPRISING EXPOSING SUCH OBJECT ND FINS TO ELEMENTAL CHLORINE WHILE SAID FINS ARE HEATED SUFFICIENTLY TO CAUSE THEM TO REACT EXOTHERMICALLY WITH THE ELEMENTAL CHLORINE AT AN EXPONENTIALLY INCREASING RATE WHILE MAINTAINING THE REMAINDER OF THE OBJECT AT A TEMPERATURE AT WHICH SUCH EXPONENTIALLY INCREASING RATE OF REACTION WITH ELEMENTAL CHLORINE DOES NOT OCCUR AND TERMINATING THE EXPOSURE OF THE OBJECT TO THE ELEMENTAL CHLORINE WHEN THE FINS HAVE BEEN SUBSTANTIALLY CONVERTED TO FERRIC CHLORIDE.
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |