Patent US2882238A successfully refreshed from Google Patents.
US2882238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barium phosphate phosphor
Assignee: Toshiba Corp
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Filing: 1954-05-17
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Granted: 1959-04-14
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Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 Uehara Yasuo
- 👤 Kobuke Yoshimasa
- 👤 Tomishima Hiroshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:15
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/70; C09K11/71
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A BARIUM PHOSPHATE PHOSPHOR PREPARED BY MIXING A MEMBER SELECTED FROM THE GROUP CONSISSTING OD BAHPO4 AND OF A MIXTURE OF A BARIUM COMPOUND AND
Claim 2
Dependent Claim
25 words
A BARIUM PHOSPHATE PHOSPHOR PREPARED BY MIXING A MEMBER SELECTED FROM THE GROUP CONSISSTING OD BAHPO4 AND OF A MIXTURE OF A BARIUM COMPOUND AND
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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |