US2970928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-diffusing glass articles and process of preparing same
Assignee: Monsanto Chemicals Ltd
•
Filing: 1955-10-19
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Granted: 1961-02-07
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Expires: 1975-10-19
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Nickerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:52
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/28; H01K1/32; H01K3/00; H01K3/005; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
AN ELECTRIC INCANDESENT GLASS LAMP BULB COMPOSED OF A GLASS BULB HAVING A FILAMENT ASSEMBLY AND IN INERT GAS ATMOSPHERE SEALED IN SAID BULB AND BEING FURTHER CHARACTERIZED IN HAVING A SELF-ADHERING, LIGH-DIFFUSING AND LIGHT-TRANSMITTING LAYER CONSISTING ESSENTIALLY OF FINE PARTICLES OF BONE ASH ON THE INNER SURFACE OF THE LIGHTTRANSMITTING PORTION OF SAID BULB.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |