U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Rare gas discharge lamp

Patent 5117160 Issued on May 26, 1992. Estimated Expiration Date: Icon_subject June 19, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3826946

Gas discharge lamp with different film thicknesses
Patent #: 4871941
Issued on: 10/03/1989
Inventor: Dobashi ,   et al.

Rare gas discharge lamp device
Patent #: 4899090
Issued on: 02/06/1990
Inventor: Yoshiike, et al.

Low-pressure discharge lamp and electrical base structure
Patent #: 4906891
Issued on: 03/06/1990
Inventor: Takagi, et al.

Light source device Patent #: 4909604
Issued on: 03/20/1990
Inventor: Kobayashi, et al.

Inventors

Assignee

Application

No. 540326 filed on 06/19/1990

US Classes:

315/326, DISCHARGE DEVICE LOAD313/607Having electrode exterior to envelope

Examiners

Primary: LaRoche, Eugene R.
Assistant: Ratliff, R. A.

Attorney, Agent or Firm

Foreign Patent References

  • 60-12660 JP. 01/12/1985

International Class

H01J 011/04

Foreign Application Priority Data

1989-06-23 JP

Abstract

A phosphor layer is coated on an inner wall of a tubular glass bulb. A predetermined amount of a rare gas containing xenon gas as a main component thereof is sealed and enclosed in the tubular glass bulb. A pair of belt-shaped electrodes are formed on an outer wall of the enclosed glass bulb throughout substantially the entire length of the glass bulb.

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