Patent US2995454A successfully refreshed from Google Patents.
US2995454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry binder and process for preparing the same
Assignee: Individual
•
Filing: 1957-02-26
•
Granted: 1961-08-08
•
Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Handl Egon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:50
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14; C04B28/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
A PROCESS FOR PREPARING A DRY BINDER WHICH CONSISTS ESSENTIALLY OF GRINDING A MIXTURE CONSISTING ESSENTIALLY OF BETWEEN 2 PERCENT AND 25 PERCENT BY VOLUME OF A DRY ALKALI METAL SILICATE, AND BETWEEN 2 PERCENT AND 25 PERCENT BY VOLUME OF A NON-ALKALI METAL SULPHATE SELECTED FROM THE GROUP CONSISTING OF SALTS OF ALUMINUM, FERROUS IRON, FERRIC IRON, COPPER, ZINC, MANGANESE, CHROMIUM AND NICKEL, THE BALANCE BEING SUBSTANTIALLY FINELYGROUND NATURALLY OCCURRING UNMODIFIED ANHYDRITE.
References Cited (Backward Citations)
US194629A
Cited
US217713A
Cited
US326317A
Cited
US502096A
Cited
US1442406A
Cited
US2410390A
Cited
US2379222A
Cited
US2531496A
Cited
GB721318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |