Patent US3264388A successfully refreshed from Google Patents.
US3264388A
Expired / Lapsed
US
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Method of continuously hot pressing powdered refractory material
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1962-02-02
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Granted: 1966-08-02
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Expires: 1982-02-02
Abstract
No abstract record available.
Inventors
- 👤 George H Roach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:36
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/17; B22F3/172; B22F3/20; B22F3/204; B30; B30B; B30B11/00; B30B11/22; B30B11/26; C; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/111; C04B35/515; C04B35/58; C04B35/5805; C04B35/58064; C04B35/58071; C04B35/622; C04B35/64; C04B35/645; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/38; C04B2235/3817; C04B2235/3839; C04B2235/3843; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2235/70; C04B2235/74; C04B2235/77; C04B2235/94; C04B2235/95; C04B2235/96; Y; Y10; Y10S; Y10S425/00; Y10S425/054
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A CONTINUOUS METHOD OF HOT PRESSING POWDERED REFRACTORY MATERIAL INTO AN ELONGATED BODY HAVING A HIGH MODULUS OF RUPTURE COMPRISING THE STEPS OF PERIODICALLY CHARGING INCREMENTS OF POWDERED REFRACTORY MATERIAL INTO AN OPEN END ELONGATED DIE, SUBJECTING THE POWDERED MATERIAL TO PROGRESSIVELY INCREASING PRESSURE WHILE PROGRESSIVELY RAISING THE TEMPERATURE OF THE MATERIAL TO THE SINTERING TEMPERATURE, MAINTAINING THE POWDERED MATERIAL AT SAID SINTERING TEMPERATURE WHILE FURTHER SUBJECTING THE MATERIAL TO PRESSURE FOR A TIME SUFFICIENT TO OBTAIN A SOLID COMPACTED BODY, AND RELEASING SAID PRESSURE PERIODICALLY FOR THE CHARGING OF ADDITIONAL INCREMENTS OF POWDERED
Claim 2
Dependent Claim
94 words
A CONTINUOUS METHOD OF HOT PRESSING POWDERED REFRACTORY MATERIAL INTO AN ELONGATED BODY HAVING A HIGH MODULUS OF RUPTURE COMPRISING THE STEPS OF PERIODICALLY CHARGING INCREMENTS OF POWDERED REFRACTORY MATERIAL INTO AN OPEN END ELONGATED DIE, SUBJECTING THE POWDERED MATERIAL TO PROGRESSIVELY INCREASING PRESSURE WHILE PROGRESSIVELY RAISING THE TEMPERATURE OF THE MATERIAL TO THE SINTERING TEMPERATURE, MAINTAINING THE POWDERED MATERIAL AT SAID SINTERING TEMPERATURE WHILE FURTHER SUBJECTING THE MATERIAL TO PRESSURE FOR A TIME SUFFICIENT TO OBTAIN A SOLID COMPACTED BODY, AND RELEASING SAID PRESSURE PERIODICALLY FOR THE CHARGING OF ADDITIONAL INCREMENTS OF POWDERED
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |