US3033694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hard sintered materials
Assignee: Hard Metal Tools Ltd
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Filing: 1959-11-16
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Granted: 1962-05-08
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Expires: 1979-11-16
Abstract
No abstract record available.
Inventors
- 👤 Edward M Trent
- 👤 David B Comins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:56
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/101; C04B35/111; C04B35/117; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3217; C04B2235/3231; C04B2235/3232; C04B2235/3237; C04B2235/38; C04B2235/3817; C04B2235/3839; C04B2235/3843; C04B2235/3852; C04B2235/3886; C04B2235/42; C04B2235/422; C04B2235/65; C04B2235/658; C04B2235/6582; C04B2235/70; C04B2235/96
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
A SINTERED HARD OBJECT CONSISTING ESSENTIALLY OF FROM 87 TO 96% ALUMINMUM, AT LEAST 2% TITNIUM NITRIDE AND AT LEAST 2% SUB-OXIDE OF TITANIUM.
References Cited (Backward Citations)
US2439290A
Cited
US2873198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |