US3214381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barium oxide moisture getter preparation
Assignee: AT&T Inc
•
Filing: 1962-12-05
•
Granted: 1965-10-26
•
Expires: 1982-12-05
Abstract
No abstract record available.
Inventors
- 👤 Gerard A Baldauf
- 👤 Michael J Elkind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:28
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/40; H10W76/42; H10W76/48; B; B22; B22F; B22F1/00; B22F1/16; C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A METHOD FOR THE PREPARTION OF A GETTERING ELEMENT WITH COMPRISES THE STEPS OF ADDING A METALLIC MATRIX MATERIAL HAVING A MELTING POINT GREATER THAN 1000*C. TO A HOT AQUEOUS SOLUTION OF BARIUM HYDROXIDE HAVING A BARIUM OXIDE CONCENTRATION WITHIN THE RANGE OF 24-48.6% BY WEIGHT, STIRRING THE RESULTANT MIXTURE AND MECHANICALLY SEPARATING SAID MATRIX, MATERIAL FROM THE SAID SOLUTION, WHEREBY THERE IS PRODUCED A BARIUM HYDROXIDE COATED MATERIAL, DRYING, PRESSING AND ACTIVATING THE SAID COATED MATERIAL IN THE PRESENCE OF A DRY INERT GAS AT TEMPERATURE WITHIN THE RANGE OF 900-1100*C., THEREBY CONVERTING THE BARIUM HYDROXIDE TO BARIUM OXIDE.
Claim 2
Independent Claim
100 words
A METHOD FOR THE PREPARTION OF A GETTERING ELEMENT WITH COMPRISES THE STEPS OF ADDING A METALLIC MATRIX MATERIAL HAVING A MELTING POINT GREATER THAN 1000*C. TO A HOT AQUEOUS SOLUTION OF BARIUM HYDROXIDE HAVING A BARIUM OXIDE CONCENTRATION WITHIN THE RANGE OF 24-48.6% BY WEIGHT, STIRRING THE RESULTANT MIXTURE AND MECHANICALLY SEPARATING SAID MATRIX, MATERIAL FROM THE SAID SOLUTION, WHEREBY THERE IS PRODUCED A BARIUM HYDROXIDE COATED MATERIAL, DRYING, PRESSING AND ACTIVATING THE SAID COATED MATERIAL IN THE PRESENCE OF A DRY INERT GAS AT TEMPERATURE WITHIN THE RANGE OF 900-1100*C., THEREBY CONVERTING THE BARIUM HYDROXIDE TO BARIUM OXIDE.
References Cited (Backward Citations)
US3056074A
Cited
US3083320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |