Patent US2517523A successfully refreshed from Google Patents.
US2517523A
Expired / Lapsed
US
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Biological window
Assignee: California Research LLC
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Filing: 1949-04-15
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Granted: 1950-08-01
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Expires: 1969-04-15
Abstract
No abstract record available.
Inventors
- 👤 Augustus H Batchelder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:15
CPC Classifications
A; A61; A61B; A61B90/00; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A BIOLOGICAL WINDOW COMPRISING A TRANSPARENT BASE AND AN ENVELOPING COATING FOR SAID BASE OF AT LEAST ONE METAL OF THE GROUP CONSISTING OF TANTALUM, COLUMBIUM AND ZIRCONIUM, SAID COATING BEING TRANSPARENT OVER AT LEAST A PORTION OF THE SURFACE OF SAID BASE AND PROVIDING BIOLOGICAL TISSUE ATTACHING MEANS OVER ANOTHER PORTION SO THAT WHEN SAID WINDOW IS ADJACENT BIOLOGICAL TISSUE SLIPPAGE BETWEEN SAID WINDOW AND SAID TISSUE MAY BE PREVENTED.
Claim 2
Dependent Claim
71 words
A BIOLOGICAL WINDOW COMPRISING A TRANSPARENT BASE AND AN ENVELOPING COATING FOR SAID BASE OF AT LEAST ONE METAL OF THE GROUP CONSISTING OF TANTALUM, COLUMBIUM AND ZIRCONIUM, SAID COATING BEING TRANSPARENT OVER AT LEAST A PORTION OF THE SURFACE OF SAID BASE AND PROVIDING BIOLOGICAL TISSUE ATTACHING MEANS OVER ANOTHER PORTION SO THAT WHEN SAID WINDOW IS ADJACENT BIOLOGICAL TISSUE SLIPPAGE BETWEEN SAID WINDOW AND SAID TISSUE MAY BE PREVENTED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |