Patent US1669312A successfully refreshed from Google Patents.
Patent US3353753A successfully refreshed from Google Patents.
US3353753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube manufacture
Assignee: Motorola Solutions Inc
•
Filing: 1965-07-22
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Granted: 1967-11-21
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Expires: 1985-07-22
Abstract
No abstract record available.
Inventors
- 👤 Edgar W Wolfgram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:28
CPC Classifications
B; B01; B01F; B01F29/00; B01F29/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD OF PREPARING PHOSPHOR SLURRY FOR APPLICATION TO THE SCREEN OF A COLOR TELEVISION PICTURE TUBE, INCLUDING THE FOLLOWING STEPS: PROVIDING A ROTATABLE MILL HAVING A CHAMBER THEREIN, PARTIALLY FILLING THE CHAMBER WITH MILLING MEDIA HAVING A FIRST SPECIFIC GRAVITY, PARTIALLY FILLING THE CHAMBER WITH PHOSPHOR CRYSTAL CHARGE OF A SECOND SPECIFIC GRAVITY AND OF A VISCOSITY LESS THAN 8,000 CENTIPOISES, SAID FIRST SPECIFIC GRAVITY HAVING A RATIO TO SAID
Claim 2
Independent Claim
71 words
A METHOD OF PREPARING PHOSPHOR SLURRY FOR APPLICATION TO THE SCREEN OF A COLOR TELEVISION PICTURE TUBE, INCLUDING THE FOLLOWING STEPS: PROVIDING A ROTATABLE MILL HAVING A CHAMBER THEREIN, PARTIALLY FILLING THE CHAMBER WITH MILLING MEDIA HAVING A FIRST SPECIFIC GRAVITY, PARTIALLY FILLING THE CHAMBER WITH PHOSPHOR CRYSTAL CHARGE OF A SECOND SPECIFIC GRAVITY AND OF A VISCOSITY LESS THAN 8,000 CENTIPOISES, SAID FIRST SPECIFIC GRAVITY HAVING A RATIO TO SAID
References Cited (Backward Citations)
US3008656A
Cited
US3165269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |