US3180835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable metal sols and method for producing the same
Assignee: California Research LLC
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Filing: 1962-07-17
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Granted: 1965-04-27
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Expires: 1982-07-17
Abstract
No abstract record available.
Inventors
- 👤 John B Peri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0026; B01J13/0043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
AS A NEW COMPOSITION, A STABLE COLLOIDAL DISPERSION IN A LIQUID HYDROCARBON OF A METAL CHARACTERIZED BY A NEGATIVE STANDARD OXIDATION-REDUCTION POTENTIAL AT 25* C. IN PARTICLES RANGING IN SIZE FROM 10 TO 1,000 ANGSTROMS, SAID DISPERSION COMPRISING: A LIQUID HYDROCARBON; UP TO 2% BY WEIGHT OF THE METAL DISPERSED THEREIN, BASED ON THE FINISHED DISPERSION; AND A SMALL AMOUNT FROM ABOUT 0.02 TO ABOUT 10.0% BY WEIGHT, BASED ON SAID LIQUID HYDROCARBON, OF AN OIL-SOLUBLE MACROMOLECULAR COPOLYMER OF (A) AT LEAST ONE OIL-SOLUBILIZING MONOMER HAVING A SINGLE POLYMERIZABLE ETHYLENIC LINKAGE AND A MONOVALENT HYDROCARBON GROUP OF FROM 8 TO 30 ALIPHATIC CARBON ATOMS, AND (B) AT LEAST ONE POLAR MONOMER SELECTED FROM THE GROUP CONSISTING OF UNSATURATED C3-C6 ALIPHATIC MONO- AND DISCARBOXYLIC ACIDS, POLYETHYLENE GLYCOL ESTERS OF SAID ACIDS AND ALKYL ETHERS THEREOF, AMINOALKYL ESTERS OF SAID ACIDS WHEREIN THE AMINOALKYL GROUP CONSISTS OF NOT MORE THAN 8 CARBON ATOMS, AND N-VINYLPYRROLIDONES, THE APPARENT MOLECULAR WEIGHT OF SAID COPOLYMER LYING IN THE RANGE FROM ABOUT 2,000 TO 1,000,000.
Claim 2
Dependent Claim
169 words
AS A NEW COMPOSITION, A STABLE COLLOIDAL DISPERSION IN A LIQUID HYDROCARBON OF A METAL CHARACTERIZED BY A NEGATIVE STANDARD OXIDATION-REDUCTION POTENTIAL AT 25* C. IN PARTICLES RANGING IN SIZE FROM 10 TO 1,000 ANGSTROMS, SAID DISPERSION COMPRISING: A LIQUID HYDROCARBON; UP TO 2% BY WEIGHT OF THE METAL DISPERSED THEREIN, BASED ON THE FINISHED DISPERSION; AND A SMALL AMOUNT FROM ABOUT 0.02 TO ABOUT 10.0% BY WEIGHT, BASED ON SAID LIQUID HYDROCARBON, OF AN OIL-SOLUBLE MACROMOLECULAR COPOLYMER OF (A) AT LEAST ONE OIL-SOLUBILIZING MONOMER HAVING A SINGLE POLYMERIZABLE ETHYLENIC LINKAGE AND A MONOVALENT HYDROCARBON GROUP OF FROM 8 TO 30 ALIPHATIC CARBON ATOMS, AND (B) AT LEAST ONE POLAR MONOMER SELECTED FROM THE GROUP CONSISTING OF UNSATURATED C3-C6 ALIPHATIC MONO- AND DISCARBOXYLIC ACIDS, POLYETHYLENE GLYCOL ESTERS OF SAID ACIDS AND ALKYL ETHERS THEREOF, AMINOALKYL ESTERS OF SAID ACIDS WHEREIN THE AMINOALKYL GROUP CONSISTS OF NOT MORE THAN 8 CARBON ATOMS, AND N-VINYLPYRROLIDONES, THE APPARENT MOLECULAR WEIGHT OF SAID COPOLYMER LYING IN THE RANGE FROM ABOUT 2,000 TO 1,000,000.
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) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |