US2868670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash lamp coating process
Assignee: US Philips Corp
•
Filing: 1955-01-05
•
Granted: 1959-01-13
•
Expires: 1975-01-05
Abstract
No abstract record available.
Inventors
- 👤 Jan Anton Willem Van Laar
- 👤 Apon Cornelis Johannes Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:05
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; F; F21; F21K; F21K5/00; F21K5/02; H; H01; H01J; H01J9/00; H01J9/20; H01K; H01K1/00; H01K1/28; H01K1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
5 MM. TO 1.5 MMS. SAID DISPERSION HAVING A VISCOSITY BETWEEN 250 AND 1000 POISES MEASURED AT 20*C. IN A HOPPLER VISCOMETER, AND HEATING THE GLASS BULB TO GELATINIZE SAID RESIN DISPERSION.
Claim 2
Independent Claim
48 words
A METHOD OF COATING THE GLASS BULB OF A FLASH LAMP COMPRISING, IMMERSING SAID GLASS BULB A SINGLE TIME IN A VISCOUS DISPERSION OF THERMOPLASTIC SYNTHETIC RESIN PARTICLES IN A SOFTENER TO FORM A PROTECTIVE LAYER ON THE EXTERIOR SURFACE OF SAID BULB HAVING A THICKNESS OF FROM
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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) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |