Patent US4584689A successfully refreshed from Google Patents.
US4584689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for modifying the liquefication or solidification point of a gas
Assignee: Micron Technology Inc
•
Filing: 1980-03-17
•
Granted: 1986-04-22
•
Expires: 2000-03-17
Abstract
Abstract An electric discharge gas laser utilizing a seedant material which is cooled prior to the main laser discharge. The seedant is ionized prior to the cooling process and prior to the main discharge, this pre-ionization maintaining the seedant material in a gaseous state even in view of the lowered temperature for a sufficient time so as to give the required ionization levels.
Inventors
- 👤 William F. List
- 👤 Ronald W. Minarik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:28
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/22; Y; Y10; Y10S; Y10S372/00; Y10S372/701
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
In a gas laser system, the improvement comprising: (A) a gas laser discharge cavity zone operable at a predetermined temperature; (B) means for introducing a plurality of gases into said zone, at least one of said gases being an active laser gas; (C) said plurality of gases including a low ionization seedant gas which would normally assume a liquid or solid state when subjected to the temperature of said zone; and (D) means for selectively ionizing said seedant gas to the exclusion of other gases prior to its introduction into said zone.
Claim 2
Dependent Claim
92 words
In a gas laser system, the improvement comprising: (A) a gas laser discharge cavity zone operable at a predetermined temperature; (B) means for introducing a plurality of gases into said zone, at least one of said gases being an active laser gas; (C) said plurality of gases including a low ionization seedant gas which would normally assume a liquid or solid state when subjected to the temperature of said zone; and (D) means for selectively ionizing said seedant gas to the exclusion of other gases prior to its introduction into said zone.
Claim 3
Dependent Claim
44 words
Apparatus according to claim 1 wherein: (A) said seedant gas is provided to said zone through a plurality of apertured tubes; and wherein (B) said means for ionizing includes electrodes positioned at the ends of said tubes and in communication with said seedant gas.
Claim 4
Dependent Claim
120 words
In a gas laser system, the improvement comprising: (A) a gas laser discharge cavity zone operable at a predetermined temperature; (B) means for introducing a plurality of gases into said zone, at least one of said gases being an active laser gas; (C) said plurality of gases including a low ionization seedant gas which would normally assume a liquid or solid state when subjected to the temperature of said zone; (D) means for ionizing said seedant gas prior to entering said zone; (E) a source of solid seedant material; (F) means for heating said material to a temperature higher than that of said zone and of a value to vaporize said material; (G) said vaporized material constituting said seedant gas.
Claim 5
Dependent Claim
120 words
In a gas laser system, the improvement comprising: (A) a gas laser discharge cavity zone operable at a predetermined temperature; (B) means for introducing a plurality of gases into said zone, at least one of said gases being an active laser gas; (C) said plurality of gases including a low ionization seedant gas which would normally assume a liquid or solid state when subjected to the temperature of said zone; (D) means for ionizing said seedant gas prior to entering said zone; (E) a source of solid seedant material; (F) means for heating said material to a temperature higher than that of said zone and of a value to vaporize said material; (G) said vaporized material constituting said seedant gas.
Claim 6
Dependent Claim
29 words
Apparatus according to claim 3 which includes: (A) means for cooling said seedant gas to a temperature comparable to that of said zone prior to introduction into said zone
References Cited (Backward Citations)
US3668550A
Cited
US3720885A
Cited
US3891944A
Cited
US3887882A
Cited
US3826997A
Cited
US3934212A
Cited
US3921098A
Cited
US3952266A
Cited
US4077017A
Cited
US4056789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |