US3188284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of etching bodies
Assignee: US Philips Corp
•
Filing: 1959-11-12
•
Granted: 1965-06-08
•
Expires: 1979-11-12
Abstract
No abstract record available.
Inventors
- 👤 Flinn Ian
- 👤 Scofield Brian Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:25
CPC Classifications
H; H10; H10P; H10P50/00; H10P50/60; H10P50/61; H10P50/613; C; C23; C23F; C23F1/00; C23F1/02; C23F1/08; C25; C25F; C25F7/00; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A METHOD OF ETCHING THE SURFACE OF A BODY AND REMOVING A PREDETERMINED DEPTH OF MATERIAL FROM THE BODY, COMPRISING ARRANGING A NOZZLE CLOSE TO BUT SPACED FROM THE SURFACE OF THE BODY TO DEFINE A CHANNEL BETWEEN THE END OF THE NOZZLE AND THE OPPOSED BODY SURFACE, FORCING ETCHANT CAPABLE OF REMOVING BODY MATERIAL UNDER A GIVEN PRESSURE THROUGH THE NOZZLE ONTO THE BODY SURFACE AND THROUGH THE SAID CHANNEL WHEREBY MATERIAL OF THE SURFACE IS REMOVED WIDENING THE SAID CHANNEL, THE NOZZLE BEING SPACED AT SUCH A DISTANCE THE BODY AND HE ETCHANT FLOWING AT SUCH A RATE THAT A SLIGHT WIDENING OF THE SAID CHANNEL WILL CAUSE A SIGNIFICANT REDUCTION IN THE PRESSURE REQUIRED TO FORCE THE ETCHANT THROUGH THE SAID CHANNEL, CONTINUING THE SAID ETCHANT FLOW WHILE MEASURING THE SAID PRESSURE REDUCTION DUE TO WIDENING OF THE CHANNEL, AND TERMINATING THE ETCHING WHEN THE PRESSURE REDUCTION REACHES A VALUE INDICATING THE PREDETERMINED DEPTH OF MATERIAL REMOVAL HAS BEEN ATTAINED.
Claim 2
Independent Claim
163 words
A METHOD OF ETCHING THE SURFACE OF A BODY AND REMOVING A PREDETERMINED DEPTH OF MATERIAL FROM THE BODY, COMPRISING ARRANGING A NOZZLE CLOSE TO BUT SPACED FROM THE SURFACE OF THE BODY TO DEFINE A CHANNEL BETWEEN THE END OF THE NOZZLE AND THE OPPOSED BODY SURFACE, FORCING ETCHANT CAPABLE OF REMOVING BODY MATERIAL UNDER A GIVEN PRESSURE THROUGH THE NOZZLE ONTO THE BODY SURFACE AND THROUGH THE SAID CHANNEL WHEREBY MATERIAL OF THE SURFACE IS REMOVED WIDENING THE SAID CHANNEL, THE NOZZLE BEING SPACED AT SUCH A DISTANCE THE BODY AND HE ETCHANT FLOWING AT SUCH A RATE THAT A SLIGHT WIDENING OF THE SAID CHANNEL WILL CAUSE A SIGNIFICANT REDUCTION IN THE PRESSURE REQUIRED TO FORCE THE ETCHANT THROUGH THE SAID CHANNEL, CONTINUING THE SAID ETCHANT FLOW WHILE MEASURING THE SAID PRESSURE REDUCTION DUE TO WIDENING OF THE CHANNEL, AND TERMINATING THE ETCHING WHEN THE PRESSURE REDUCTION REACHES A VALUE INDICATING THE PREDETERMINED DEPTH OF MATERIAL REMOVAL HAS BEEN ATTAINED.
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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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |