US2982668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing oxide coatings on surfaces, especially a light-diffusing layer on glass vessels, e.g. on the inside of envelopes for electric lamps
Assignee: Auralight AB
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Filing: 1957-03-19
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Granted: 1961-05-02
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Expires: 1977-03-19
Abstract
No abstract record available.
Inventors
- 👤 Gunnar G J Gunther
- 👤 Gosta B Rosengren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:52
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/245; C03C17/34; C03C17/3411; C03C17/3417; H; H01; H01J; H01J5/00; H01J5/02; H01J5/08; H01J9/00; H01J9/20; H01K; H01K3/00; H01K3/005; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/211; C03C2217/212; C03C2217/213; C03C2218/00; C03C2218/10; C03C2218/15; C03C2218/152
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
METHOD OF PRODUCING LIGHT-DIFFUSING OXIDE COATINGS ON THE INSIDE OF GLASS ENVELOPES FOR ELECTRIC LAMPS, THE GLASS BEING SUSCEPTIBLE TO ACTION OF HYDROCHLORIC ACID, COMPRISING THE STEPS OF BURNING IN AN OXYGEN AND HYDROGEN CONTAINING FLAME, AT LEAST ONE OF THE VOLATILE HALOGENOUS COMPOUNDS OF AT LEAST ONE METAL BELONGING TO THE FOURTH GROUP OF THE PERIODIC SYSTEM TO FORM DISCRETE OXIDE PARTICLES, WATER AND HYDROCHLORIC ACID, THE ACID ACTING ON THE GLASS IN THE PRESENCE OF THE WATER TO FORM A HYDRATED SILICA GEL LAYER ADHERENT ON THE GLASS, AND OF DEPOSITING ON THE INSIDE OF SAID LAMP ON THE SILICA LAYER ADJACENT TO THE GLASS, A LAYER OF THE DISCRETE OXIDE PARTICLES FORMED AS REACTION PRODUCTS FROM SAID COMBUSTION PROCESS.
Claim 2
Dependent Claim
122 words
METHOD OF PRODUCING LIGHT-DIFFUSING OXIDE COATINGS ON THE INSIDE OF GLASS ENVELOPES FOR ELECTRIC LAMPS, THE GLASS BEING SUSCEPTIBLE TO ACTION OF HYDROCHLORIC ACID, COMPRISING THE STEPS OF BURNING IN AN OXYGEN AND HYDROGEN CONTAINING FLAME, AT LEAST ONE OF THE VOLATILE HALOGENOUS COMPOUNDS OF AT LEAST ONE METAL BELONGING TO THE FOURTH GROUP OF THE PERIODIC SYSTEM TO FORM DISCRETE OXIDE PARTICLES, WATER AND HYDROCHLORIC ACID, THE ACID ACTING ON THE GLASS IN THE PRESENCE OF THE WATER TO FORM A HYDRATED SILICA GEL LAYER ADHERENT ON THE GLASS, AND OF DEPOSITING ON THE INSIDE OF SAID LAMP ON THE SILICA LAYER ADJACENT TO THE GLASS, A LAYER OF THE DISCRETE OXIDE PARTICLES FORMED AS REACTION PRODUCTS FROM SAID COMBUSTION PROCESS.
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) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |