US3088832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alumina base ceramic
Assignee: —
•
Filing: —
•
Granted: 1963-05-07
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Expires: 1980-05-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:07
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/111; C04B35/495; C04B35/622; C04B35/626; C04B35/62605; C04B35/62645; C04B35/62655; C04B35/64; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3217; C04B2235/3231; C04B2235/3232; C04B2235/3251; C04B2235/65; C04B2235/656; C04B2235/70; C04B2235/72; C04B2235/74; C04B2235/77; C04B2235/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A FIRED CERAMIC BODY CHARACTERIZED BY A HIGH FIRED DENSITY OF AT LEAST ABOUT 3.9 AND SHOWING ON CHEMICAL ANALYSIS ALUMINUM OXIDE AT LEAST 95% BY WEIGHT AND AT LEAST A SMALL BUT EFFECTIVE AMOUNTT UP TO 1.5% BY WEIGHT NIOBUM OXIDE TO PROVIDE SAID HIGH FIRED DENSITY.
Claim 2
Dependent Claim
48 words
A FIRED CERAMIC BODY CHARACTERIZED BY A HIGH FIRED DENSITY OF AT LEAST ABOUT 3.9 AND SHOWING ON CHEMICAL ANALYSIS ALUMINUM OXIDE AT LEAST 95% BY WEIGHT AND AT LEAST A SMALL BUT EFFECTIVE AMOUNTT UP TO 1.5% BY WEIGHT NIOBUM OXIDE TO PROVIDE SAID HIGH FIRED DENSITY.
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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |