Patent US3227909A successfully refreshed from Google Patents.
US3227909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incandescent electric lamp
Assignee: Osram GmbH
•
Filing: 1963-12-30
•
Granted: 1966-01-04
•
Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 Schilling Werner
- 👤 Sanden Jurgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:57
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/42; H01K1/28; H01K1/50; H01K5/00; H01K5/02; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN ELECTRIC INCANDESCENT LAMP HAVING A HOLLOW BULB OF HIGH-MELTING MATERIAL AND HAVING A PAIR OF IN-LEADS SEALED IN SAID HUB, A TUNGSTEN FILAMENT IN THE FORM OF A COIL LONGITUDINALLY OF AN AXIS, SAID COIL COMPRISED OF SUBSTANTIALLY FLAT CONVOLUTIONS PRESENTING AS A GROUP A FILAMENT WITH BROAD PLANAR FACETS AND NARROW EDGES LONGITUDINALLY OF SAID AXIS AND WITH SAID BROAD FACETS AND NARROW EDGES SPACED FROM SAID AXIS, SAID FILAMENT BEING SUPPORTED ENTIRELY BY SAID PAIR OF IN-LEADS, SAID BULB HAVING A GAS FILLING WITH ADDITIVE OF IODINE THERETO, AND SAID BULB HAVING A FLATTENED AREA A MIDPORTION WHEREOF IS
Claim 2
Dependent Claim
102 words
AN ELECTRIC INCANDESCENT LAMP HAVING A HOLLOW BULB OF HIGH-MELTING MATERIAL AND HAVING A PAIR OF IN-LEADS SEALED IN SAID HUB, A TUNGSTEN FILAMENT IN THE FORM OF A COIL LONGITUDINALLY OF AN AXIS, SAID COIL COMPRISED OF SUBSTANTIALLY FLAT CONVOLUTIONS PRESENTING AS A GROUP A FILAMENT WITH BROAD PLANAR FACETS AND NARROW EDGES LONGITUDINALLY OF SAID AXIS AND WITH SAID BROAD FACETS AND NARROW EDGES SPACED FROM SAID AXIS, SAID FILAMENT BEING SUPPORTED ENTIRELY BY SAID PAIR OF IN-LEADS, SAID BULB HAVING A GAS FILLING WITH ADDITIVE OF IODINE THERETO, AND SAID BULB HAVING A FLATTENED AREA A MIDPORTION WHEREOF IS
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |