US3402458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing aluminum oxide bodies to metals
Assignee: Diamond Tool Engineering Co
•
Filing: 1964-09-29
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Granted: 1968-09-24
•
Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 Annis G Asaff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:55
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; C04B2235/00; C04B2235/02; C04B2235/50; C04B2235/54; C04B2235/5418; C04B2235/5427; C04B2235/60; C04B2235/604; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2235/658; C04B2235/6581; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/122; C04B2237/123; C04B2237/125; C04B2237/126; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/40; C04B2237/405; C04B2237/50; C04B2237/52; C04B2237/64; C04B2237/72; C04B2237/76; C04B2237/765; C04B2237/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF SECURING AN ALUMINUM OXIDE BODY OF ELECTRICAL QUALITY TO A METAL ELEMENT WHICH COMPRISES THE STEPS OF PROVIDING A HOLLOW ALUMINUM OXIDE BODY WITH AN INNER DIAMETER, PROVIDING A METAL ELEMENT WITH AN OUTER DIAMETER AT LEAST AS LARGE AS SAID INNER DIAMETER OF SAID ALUMINUM OXIDE BODY, PROVIDING ON SAID BODY AND SAID ELEMENT A PAIR OF COOPERATING BRAZING SURFACES WHICH ADJACENT THE END OF SAID BODY FORM A FUNNEL-LIKE ZONE WHEN SAID ELEMENT IS INSERTED INTO SAID BODY, METAL COATING SAID SURFACE OF SAID BODY, PRESSING SAID METAL ELEMENT
Claim 2
Independent Claim
94 words
THE METHOD OF SECURING AN ALUMINUM OXIDE BODY OF ELECTRICAL QUALITY TO A METAL ELEMENT WHICH COMPRISES THE STEPS OF PROVIDING A HOLLOW ALUMINUM OXIDE BODY WITH AN INNER DIAMETER, PROVIDING A METAL ELEMENT WITH AN OUTER DIAMETER AT LEAST AS LARGE AS SAID INNER DIAMETER OF SAID ALUMINUM OXIDE BODY, PROVIDING ON SAID BODY AND SAID ELEMENT A PAIR OF COOPERATING BRAZING SURFACES WHICH ADJACENT THE END OF SAID BODY FORM A FUNNEL-LIKE ZONE WHEN SAID ELEMENT IS INSERTED INTO SAID BODY, METAL COATING SAID SURFACE OF SAID BODY, PRESSING SAID METAL ELEMENT
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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) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |