US2720468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for gelling
Assignee: EIDP Inc
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Filing: 1954-05-28
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Granted: 1955-10-11
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Expires: 1974-05-28
Abstract
No abstract record available.
Inventors
- 👤 Shacklett Comer Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:35
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/047; C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
THE PROCESS OF GELLING THIN LAYERS OF SYNTHETIC HYDROXYL POLYMERS WHICH COMPRISES APPLYING TO A SUPPORT A LAYER COMPRISING A WATER-SOLUBLE, AMORPHOUS ORGANO-TITANIUM COMPOUND COMPRISING THE COMPLEX CONDENSATION PRODUCT OF ONE MOL OF AN ORTHO TITANATE OF THE FORMULA TI(OR)4 WHERE R IS AN ALKYL RADICAL OF 1 TO 8 CARBON ATOMS WITH 1/2 TO 4 MOLS OF A SATURATED ALIPHATIC HY DROXY CARBOXYLIC ACID OF 2 TO 6 CARBON ATOMS HAVING 1 TO 3 CARBOXYLIC ACID GROUPS, THE HYDROXYL GROUPS BEING IN THE A-POSITION TO A CARBOXYLIC ACID RADICAL THEREOF AND COATING THE RESULTING LAYER WITH A LAYER FROM A VISCOUS AQUEOUS SOLUTION CONTAINING A WATER-SENSITIVE SYNTHETIC HYDROXYL POLYMER HAVING DISPERSED THERETHROUGH LIGHT-SENSITIVE SILVER HALIDE GRAINS.
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) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |