US2721812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium organo silanolate, process of treating a siliceous material therewith and product thereby
Assignee: EIDP Inc
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Filing: 1952-04-01
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Granted: 1955-10-25
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Expires: 1972-04-01
Abstract
No abstract record available.
Inventors
- 👤 Ralph K Iler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:06
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/21; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/40; C07F7/08; C07F7/0834; C07F7/0838; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A PROCESS OF MODIFYING A GLASS SURFACE THE STEP COMPRISING TREATING SAID SURFACE WITH AN AQUEOUS DISPERSION OF A QUATERNARY AMMONIUM ORGANO SILANOLATE WITH A QUATERY AMMONIUM:SI RATIO OF FROM 1:1 TO 2:1 AND HAVING UP TO TWO HYDROCARBON GROUP DIRECTLY ATTACHED TO EACH SILICON ATOM, THE TOTAL NUMBER OF CARBON ATOMS IN EACH SUCH GROUP ATTACHED TO SILICON BEING NO GREATER THAN EIGHT AND THE SILICON ATOM CARRYING AT LEAST ONE ALIPHATIC, UNSATURATED SI-ORGANO GROUP, THE QUATERNARY AMMONIUM ION HAVING FOUR SUBSTITUENT GROUPS EACH CONTAINING NO CARBON ATOM FURTHER REMOVED FROM THE NITROGEN THAN FIVE CONSECUTIVE CARBON ATOMS AND THE TOTAL NUMBER OF CARBON ATOMS IN THE FOUR SUBSTITUENT GROUPS BEING NOT IN EXCESS OF SIXTEEN, AND HEATING THE TREATED SURFACE TO VOLATILIZE AMMONIUM BASE.
Claim 2
Dependent Claim
127 words
IN A PROCESS OF MODIFYING A GLASS SURFACE THE STEP COMPRISING TREATING SAID SURFACE WITH AN AQUEOUS DISPERSION OF A QUATERNARY AMMONIUM ORGANO SILANOLATE WITH A QUATERY AMMONIUM:SI RATIO OF FROM 1:1 TO 2:1 AND HAVING UP TO TWO HYDROCARBON GROUP DIRECTLY ATTACHED TO EACH SILICON ATOM, THE TOTAL NUMBER OF CARBON ATOMS IN EACH SUCH GROUP ATTACHED TO SILICON BEING NO GREATER THAN EIGHT AND THE SILICON ATOM CARRYING AT LEAST ONE ALIPHATIC, UNSATURATED SI-ORGANO GROUP, THE QUATERNARY AMMONIUM ION HAVING FOUR SUBSTITUENT GROUPS EACH CONTAINING NO CARBON ATOM FURTHER REMOVED FROM THE NITROGEN THAN FIVE CONSECUTIVE CARBON ATOMS AND THE TOTAL NUMBER OF CARBON ATOMS IN THE FOUR SUBSTITUENT GROUPS BEING NOT IN EXCESS OF SIXTEEN, AND HEATING THE TREATED SURFACE TO VOLATILIZE AMMONIUM BASE.
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) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |