US3236925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing aerated concrete structures
Assignee: Individual
•
Filing: 1965-01-29
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Granted: 1966-02-22
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Expires: 1985-01-29
Abstract
No abstract record available.
Inventors
- 👤 Urmston Charles Willi Brabazon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:15
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/38; B28C5/381; B28C5/386; B28C5/003; C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS OF PRODUCING AERATED CONCRETE COMPRISING THE STEPS OF FORMING A MIX OF CEMENTITIOUS MATERIAL, AGGREGATE AND WATER; INTRODUCING INTO SAID MIX FINELY DIVIDED ALUMINUM, AN OXIDE CATALYST IN FINELY DIVIDED FORM, AN ALKALI AND A SOAP THE PROPORTION OF THE LATTER BEING LESS THAN 2 PERCENT BY WEIGHT OF THE TOTAL DRY MATERIAL; AGITATING THE MIX TO PRODUCE A UNIFORM THICK CREAM; AND SUBSEQUENTLY POURING THE AGITATED MIX INTO MOULDS.
Claim 2
Dependent Claim
72 words
A PROCESS OF PRODUCING AERATED CONCRETE COMPRISING THE STEPS OF FORMING A MIX OF CEMENTITIOUS MATERIAL, AGGREGATE AND WATER; INTRODUCING INTO SAID MIX FINELY DIVIDED ALUMINUM, AN OXIDE CATALYST IN FINELY DIVIDED FORM, AN ALKALI AND A SOAP THE PROPORTION OF THE LATTER BEING LESS THAN 2 PERCENT BY WEIGHT OF THE TOTAL DRY MATERIAL; AGITATING THE MIX TO PRODUCE A UNIFORM THICK CREAM; AND SUBSEQUENTLY POURING THE AGITATED MIX INTO MOULDS.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |