Patent US3323967A successfully refreshed from Google Patents.
US3323967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Masking device
Assignee: Individual
•
Filing: 1964-06-01
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Granted: 1967-06-06
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Expires: 1984-06-01
Abstract
No abstract record available.
Inventors
- 👤 James E Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:42
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A DEVICE FOR USE ON A WORKPIECE TO BE IMMERSED IN AN ETCHING SOLUTION COMPRISING: (A) A MASKING BOOT COMPOSED ENTIRELY OF A FLEXIBLE, IMPERVIOUS, RUBBER MATERIAL WHICH ENCLOSES THE ENTIRE WORKPIECE EXCEPT FOR A SURFACE AREA SLIGHTLY LARGER THAN THAT TO BE ETCHED; (B) SAID MASKING BOOT HAVING A CONTINUOUS EDGE PORTION THAT DEFINES AN OPENING IN SAID MASKING BOOT WHICH EXPOSES THE SURFACE AREA OF THE WORKPIECE TO BE ETCHED; (C) TAPE MEANS HERMETICALLY SEALING THE CONTINUOUS EDGE OF SAID MASKING BOOT TO THE WORKPIECE AND MASKING THE WORKPIECE SO THAT ONLY THE PRECISE AREA TO BE ETCHED IS LEFT EXPOSED; (D) MEANS FOR EVACUATING AIR ENTRAPPED BETWEEN SAID MASKING BOOT AND SAID WORKPIECE TO PROVIDE A VACUUM SEAL THEREBETWEEN; AND (E) MEAMS COMPRISING A FIBROUS MATERIAL DISPOSED BETWEEN SAID MASKING BOOT AND SAID WORKPIECE TO ASSURE A SUBSTANTIALLY COMPLETE EVACUATION OF THE AIR ENTRAPPED BETWEEN THE MASKING BOOT AND THE WORKPIECE.
Claim 2
Independent Claim
154 words
A DEVICE FOR USE ON A WORKPIECE TO BE IMMERSED IN AN ETCHING SOLUTION COMPRISING: (A) A MASKING BOOT COMPOSED ENTIRELY OF A FLEXIBLE, IMPERVIOUS, RUBBER MATERIAL WHICH ENCLOSES THE ENTIRE WORKPIECE EXCEPT FOR A SURFACE AREA SLIGHTLY LARGER THAN THAT TO BE ETCHED; (B) SAID MASKING BOOT HAVING A CONTINUOUS EDGE PORTION THAT DEFINES AN OPENING IN SAID MASKING BOOT WHICH EXPOSES THE SURFACE AREA OF THE WORKPIECE TO BE ETCHED; (C) TAPE MEANS HERMETICALLY SEALING THE CONTINUOUS EDGE OF SAID MASKING BOOT TO THE WORKPIECE AND MASKING THE WORKPIECE SO THAT ONLY THE PRECISE AREA TO BE ETCHED IS LEFT EXPOSED; (D) MEANS FOR EVACUATING AIR ENTRAPPED BETWEEN SAID MASKING BOOT AND SAID WORKPIECE TO PROVIDE A VACUUM SEAL THEREBETWEEN; AND (E) MEAMS COMPRISING A FIBROUS MATERIAL DISPOSED BETWEEN SAID MASKING BOOT AND SAID WORKPIECE TO ASSURE A SUBSTANTIALLY COMPLETE EVACUATION OF THE AIR ENTRAPPED BETWEEN THE MASKING BOOT AND THE WORKPIECE.
References Cited (Backward Citations)
US2820312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |