US3263319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cold deep drawing metal foil
Assignee: Varian Medical Systems Inc
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Filing: 1964-02-28
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Granted: 1966-08-02
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Expires: 1984-02-28
Abstract
No abstract record available.
Inventors
- 👤 William H Tifft
- 👤 John W Mclaughlin
- 👤 Randolph H Wendelin
- 👤 Michael J Sandor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:49
CPC Classifications
C; C23; C23F; C23F1/00; B; B21; B21D; B21D22/00; B21D22/20; B21D22/201; B21D33/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD OF COLD FORMING A METAL FOIL HAVING A THICKNESS OF ABOUT .001" AND COMPOSED OF A METALLIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF KOVAR AND TANTALUM COMPRISING THE STEPS OD SECURING A LAYER OF MONEL RACH SIDE OF THE METAL FOIL TO FORM A COMPOSITE METALLIC SHEET HAVING A THICKNESS OF AT LEAST .005", COLD WORKING THE COMPOSITE METALLIC SHEET TO FORM A PREDETERMINED HOLLOW FORM, REMOVING ANY UNWANTED PORTION OF SAID FORMED COMPOSITE METALLIC MATERIAL, REMOVING THE MONEL FROM THE SHAPED COMPOSITE MATERIAL BY SUBMERGING THE SHAPED COMPOSITE MATERIAL IN CLEAR CONCENTRATED NITRIC ACID.
Claim 2
Independent Claim
98 words
A METHOD OF COLD FORMING A METAL FOIL HAVING A THICKNESS OF ABOUT .001" AND COMPOSED OF A METALLIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF KOVAR AND TANTALUM COMPRISING THE STEPS OD SECURING A LAYER OF MONEL RACH SIDE OF THE METAL FOIL TO FORM A COMPOSITE METALLIC SHEET HAVING A THICKNESS OF AT LEAST .005", COLD WORKING THE COMPOSITE METALLIC SHEET TO FORM A PREDETERMINED HOLLOW FORM, REMOVING ANY UNWANTED PORTION OF SAID FORMED COMPOSITE METALLIC MATERIAL, REMOVING THE MONEL FROM THE SHAPED COMPOSITE MATERIAL BY SUBMERGING THE SHAPED COMPOSITE MATERIAL IN CLEAR CONCENTRATED NITRIC ACID.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |