US2772190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing the electrical conductivity of tin oxide films
Assignee: Hartford National Bank and Trust Co
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Filing: 1952-09-25
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Granted: 1956-11-27
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Expires: 1972-09-25
Abstract
No abstract record available.
Inventors
- 👤 Haayman Pieter Willem
- 👤 Veeneman Dirk
- 👤 Janssen Gerardus Hendricus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:57
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/006; C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C17/253; H01B; H01B1/00; H01B1/06; H01B1/08; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/211; C03C2217/24; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A METHOD OF PRODUCING TRANSPARENT ELECTRICALLY CONDUCTING FILMS CONSISTING SUBSTANTIALLY OF TIN OXIDE BY APPLYING A FILMING MATERIAL IN FLUID FORM AND WHICH COMPRISES AN ELECTRICALLY-CONDUCTING FILM-FORMING COMPOUND OF TIN TO A HOT VITREOUS SURFACE, HEATED TO A TEMPERATURE OF AT LEAST 300* C.; THE STEP OF INCREASING THE ELECTRICAL CONDUCTIVITY OF SUCH FILMS WHICH COMPRISES ADDING TO SAID FILMING MATERIAL, BY PUTTING INTO SOLUTION THEREWITH, AN AMOUNT OF A COMPOUND OF PHOSPHORUS TO YIELD AN AMOUNT OF PHOSPHORUS NOT LESS THAN ABOUT 0.033% TO NOT MORE THAN ABOUT 12.4% BY WEIGHT OF THE TIN IN SAID FILMING MATERIAL, BEFORE APPLYING SAID FILMING MATERIAL TO SAID SURFACE.
Claim 2
Dependent Claim
108 words
IN A METHOD OF PRODUCING TRANSPARENT ELECTRICALLY CONDUCTING FILMS CONSISTING SUBSTANTIALLY OF TIN OXIDE BY APPLYING A FILMING MATERIAL IN FLUID FORM AND WHICH COMPRISES AN ELECTRICALLY-CONDUCTING FILM-FORMING COMPOUND OF TIN TO A HOT VITREOUS SURFACE, HEATED TO A TEMPERATURE OF AT LEAST 300* C.; THE STEP OF INCREASING THE ELECTRICAL CONDUCTIVITY OF SUCH FILMS WHICH COMPRISES ADDING TO SAID FILMING MATERIAL, BY PUTTING INTO SOLUTION THEREWITH, AN AMOUNT OF A COMPOUND OF PHOSPHORUS TO YIELD AN AMOUNT OF PHOSPHORUS NOT LESS THAN ABOUT 0.033% TO NOT MORE THAN ABOUT 12.4% BY WEIGHT OF THE TIN IN SAID FILMING MATERIAL, BEFORE APPLYING SAID FILMING MATERIAL TO SAID SURFACE.
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) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |