US3264388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously hot pressing powdered refractory material
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1962-02-02
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Granted: 1966-08-02
•
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 04:13
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
References Cited (Backward Citations)
US1541584A
Cited
US1904197A
Cited
GB380824A
Cited
US2076315A
Cited
US2097502A
Cited
US2348172A
Cited
US2261196A
Cited
GB719611A
Cited
US2728128A
Cited
US2902714A
Cited
US2844845A
Cited
US2964400A
Cited
US2932565A
Cited
DE1062604B
Cited
US3014238A
Cited
US2996759A
Cited
US3119148A
Cited
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 |