US2987352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zirconium bearings and process of producing same
Assignee: Atomic Energy of Canada Ltd AECL
•
Filing: 1958-02-10
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Granted: 1961-06-06
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Expires: 1978-02-10
Abstract
No abstract record available.
Inventors
- 👤 Robert D Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:43
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/043; F16C17/00; F16C17/12; F16C17/14; F16C2206/00; F16C2206/40; F16C2206/42; F16C2206/48; F16C2240/00; F16C2240/40; F16C2240/60; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A BEARING MEMBER CONSISTING ESSENTIALLY OF A BODY OF ZIRCONIUM METAL HAVING A TIGHTLY ADHERENT SURFACE LAYER OF BLUE-BLACK ZIRCONIUM DIOXIDE OF MONOCLINIC CRYSTALLINE FORM, FORMED BY OXIDATION OF THE SURFACE PORTION OF SAID BODY.
Claim 2
Dependent Claim
35 words
A BEARING MEMBER CONSISTING ESSENTIALLY OF A BODY OF ZIRCONIUM METAL HAVING A TIGHTLY ADHERENT SURFACE LAYER OF BLUE-BLACK ZIRCONIUM DIOXIDE OF MONOCLINIC CRYSTALLINE FORM, FORMED BY OXIDATION OF THE SURFACE PORTION OF SAID BODY.
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |