Patent US3087825A successfully refreshed from Google Patents.
US3087825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-resistant cementitious mineral building materials and method of productionof the same
Assignee: Individual
•
Filing: 1959-06-02
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Granted: 1963-04-30
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Expires: 1979-06-02
Abstract
No abstract record available.
Inventors
- 👤 Meier-Grolman Franz Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:32
CPC Classifications
C; C04; C04B; C04B22/00; C04B22/08; C04B22/12; C04B22/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN THE PRODUCTION OF CORROSION-RESISTANT CEMENTITIOUS BUILDING MATERIALS WHEREIN A CEMENTITIOUS MATERIAL MIXTURE CONTAINING HYDRATE OF LIME IS TREATED WITH MIXING WATER, THE STEP OF ADDING TO THE MIXING WATER A LIMEBINDING AGENT CONSISTING ESSENTIALLY OF WATER-SOLUBLE FLUOSILICATE IN A PROPORTION OF 0.1-1% BY WEIGHT RELATIVE TO THE WEIGHT OF CEMENTITIOUS MATERIAL IN THE MIXTURE.
Claim 2
Dependent Claim
55 words
IN THE PRODUCTION OF CORROSION-RESISTANT CEMENTITIOUS BUILDING MATERIALS WHEREIN A CEMENTITIOUS MATERIAL MIXTURE CONTAINING HYDRATE OF LIME IS TREATED WITH MIXING WATER, THE STEP OF ADDING TO THE MIXING WATER A LIMEBINDING AGENT CONSISTING ESSENTIALLY OF WATER-SOLUBLE FLUOSILICATE IN A PROPORTION OF 0.1-1% BY WEIGHT RELATIVE TO THE WEIGHT OF CEMENTITIOUS MATERIAL IN THE MIXTURE.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |