Patent US2601668A successfully refreshed from Google Patents.
US2601668A
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Stabilized barium and strontium lithol toners
Assignee: Wyeth Holdings LLC
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Filing: 1949-09-27
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Granted: 1952-06-24
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Expires: 1969-09-27
Abstract
No abstract record available.
Inventors
- 👤 Tullsen Volney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:22
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS OF TRANSFORMING AN UNSTABLE LITHOL TONER, SELECTED FROM THE GROUP CONSISTING OF BARIUM AND STRONTIUM LITHOL TONERS, INTO A STABLE FORM WHICH COMPRISES HEATING THE TONER IN AN OXYGEN-CONTAINING ORGANIC LIQUID SELECTED FROM THE GROUP CONSISTING OF MONO-, DI-, AND TRIETHYLENE GLYCOLS AND DIOXANE AT A TEMPERATURE RANGING FROM ABOUT 50* C. TO ABOUT 200* C. AND FOR A TIME PERIOD RANGING FROM ABOUT 10 MINUTES TO ABOUT A DAY, UNTIL TRANSFORMATION INTO THE STABLE CRYSTAL STRUCTURE IS SUBSTANTIALLY COMPLETE.
Claim 2
Dependent Claim
82 words
A PROCESS OF TRANSFORMING AN UNSTABLE LITHOL TONER, SELECTED FROM THE GROUP CONSISTING OF BARIUM AND STRONTIUM LITHOL TONERS, INTO A STABLE FORM WHICH COMPRISES HEATING THE TONER IN AN OXYGEN-CONTAINING ORGANIC LIQUID SELECTED FROM THE GROUP CONSISTING OF MONO-, DI-, AND TRIETHYLENE GLYCOLS AND DIOXANE AT A TEMPERATURE RANGING FROM ABOUT 50* C. TO ABOUT 200* C. AND FOR A TIME PERIOD RANGING FROM ABOUT 10 MINUTES TO ABOUT A DAY, UNTIL TRANSFORMATION INTO THE STABLE CRYSTAL STRUCTURE IS SUBSTANTIALLY COMPLETE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |