US3248237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions of matter containing organic silicates
Assignee: PQ Corp
•
Filing: 1962-09-20
•
Granted: 1966-04-26
•
Expires: 1982-09-20
Abstract
No abstract record available.
Inventors
- 👤 Weldes Helmut Hans Wilhelm
- 👤 Derolf Mahlon Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:24
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/205
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
33 words
A STABLE FLOWABLE COMPOSITION CONSISTING ESSENTIALLY OF: (A) A SOLID PARTICULATE MATERIAL, AND (B) A BINDER COMPONENT CONSISTING ESSENTIALLY OF A SUBSTANTIALLY ALKALI METAL-FREE AMORPHOUS QUATERNARY AMMONIUM ORGANIC SILICATE CHARACTERIZED BY THE FORMULA:
Claim 2
Dependent Claim
33 words
A STABLE FLOWABLE COMPOSITION CONSISTING ESSENTIALLY OF: (A) A SOLID PARTICULATE MATERIAL, AND (B) A BINDER COMPONENT CONSISTING ESSENTIALLY OF A SUBSTANTIALLY ALKALI METAL-FREE AMORPHOUS QUATERNARY AMMONIUM ORGANIC SILICATE CHARACTERIZED BY THE FORMULA:
Claim 3
Independent Claim
13 words
A METHOD FOR PREPOLYMERIZING AN AMORPHOUS QUATERNARY AMMONIUM ORGANIC SILICATE HAVING THE FORMULA:
Claim 4
Independent Claim
13 words
A METHOD FOR PREPOLYMERIZING AN AMORPHOUS QUATERNARY AMMONIUM ORGANIC SILICATE HAVING THE FORMULA:
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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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |