US3004332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder metallurgy process
Assignee: AT&T Inc
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Filing: 1958-09-02
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Granted: 1961-10-17
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Expires: 1978-09-02
Abstract
No abstract record available.
Inventors
- 👤 John K Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:51
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F1/00; B22F1/14; B22F1/145; C; C22; C22C; C22C1/00; C22C1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
THE PROCESS OF FABRICATING A POROUS STRUCTURE FROM OXIDE-COATED METAL PARTICLES BY POWDER METALLURGY TECHNIQUES COMPRISING THE STEPS PRETREATING PARTICLES OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, MAGNESIUM, ZIRCONIUM AND TITANIUM IN AN AQUEOUS SOLUTION SELECTED FROM THE GROUP CONSISTING OF HYDRAZINE SULFATE, HYDROFLUORIC ACID, SOLUTIONS OF CHROMIC AND PHOSPHORIC ACIDS, HYDROCHLORIC ACID, SULFURIC ACID, TO EFFECT A SUBSTITUTION OF
Claim 2
Dependent Claim
63 words
THE PROCESS OF FABRICATING A POROUS STRUCTURE FROM OXIDE-COATED METAL PARTICLES BY POWDER METALLURGY TECHNIQUES COMPRISING THE STEPS PRETREATING PARTICLES OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, MAGNESIUM, ZIRCONIUM AND TITANIUM IN AN AQUEOUS SOLUTION SELECTED FROM THE GROUP CONSISTING OF HYDRAZINE SULFATE, HYDROFLUORIC ACID, SOLUTIONS OF CHROMIC AND PHOSPHORIC ACIDS, HYDROCHLORIC ACID, SULFURIC ACID, TO EFFECT A SUBSTITUTION OF
References Cited (Backward Citations)
US2718463A
Cited
US2749487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |