US2795568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified clays
Assignee: Monsanto Chemicals Ltd
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Filing: 1953-04-14
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Granted: 1957-06-11
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Expires: 1973-04-14
Abstract
No abstract record available.
Inventors
- 👤 Robert A Ruehrwein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:06
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
AM ADDUCT OF AN EXPANDING LATTICE CLAY WITH AT LEAST 10 WEIGHT PERCENT, BASED ON SAID ADDUCT, OF A PORTION DONOR SYNTHETIC HIGH POLOYMER CONTAINING A SUBSTANTIALLY LINEAR MOLECULAR CHAIN DERIVED BY THE POLYMERIZATION OF AT LEAST ONE MONOOLEFINIC COMPOUND THROUGH ALIPHATIC UNSATURATION, SAID ADDUCT HAVING BEEN OBTAINED BY REACTING SAID CLAY WITH SAID POLYMER IN THE PRESENCE OF A REACTION MEDIUM CONSISTING OF WATER SO THAT SAID POLYMER IS TIED. TO THE SURFACES OF SAID CLAY BY HYDROGEN BONDING THROUGH LABILE HYDROGEN ATOMS OF SAID POLYMER.
Claim 2
Dependent Claim
87 words
AM ADDUCT OF AN EXPANDING LATTICE CLAY WITH AT LEAST 10 WEIGHT PERCENT, BASED ON SAID ADDUCT, OF A PORTION DONOR SYNTHETIC HIGH POLOYMER CONTAINING A SUBSTANTIALLY LINEAR MOLECULAR CHAIN DERIVED BY THE POLYMERIZATION OF AT LEAST ONE MONOOLEFINIC COMPOUND THROUGH ALIPHATIC UNSATURATION, SAID ADDUCT HAVING BEEN OBTAINED BY REACTING SAID CLAY WITH SAID POLYMER IN THE PRESENCE OF A REACTION MEDIUM CONSISTING OF WATER SO THAT SAID POLYMER IS TIED. TO THE SURFACES OF SAID CLAY BY HYDROGEN BONDING THROUGH LABILE HYDROGEN ATOMS OF SAID POLYMER.
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) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |