US3586896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incandescent lamps having a transport gas comprising a bromine and a chlorine hydrocarbon compound
Assignee: US Philips Corp
•
Filing: 1969-07-03
•
Granted: 1971-06-22
•
Expires: 1989-07-03
Abstract
Abstract A regenerative cycle electric incandescent lamp having a tungsten filament and containing a transport gas essentially consisting of an inert gas and a bromine and chlorine hydrocarbon compound.
Inventors
- 👤 Riksterus Auguste Johan Meijer
- 👤 Germin Remi T Jampens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:31
CPC Classifications
H; H01; H01K; H01K3/00; H01K3/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
25 words
A regenerative cycle incandescent electric lamp as claimed in claim 1 wherein the brominated and chlorinated hydrocarbons essentially consist of bromine and chlorine methane compounds.
Claim 2
Dependent Claim
22 words
A regnenerative cycle incandescent electric lamp as claimed in claim 1 wherein the brominated and chlorinated hydrocarbons essentially consist of bromochloromethane (CH2BrC1).
Claim 3
Dependent Claim
29 words
A regenerative cycle incandescent electric lamp as claimed in claim 1 wherein the brominated and chlorinated hydrocarbons essentially consist of a further mixture of dibromomethane (CH2Br2) and dichloromethane (CH2C12).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |