US2601668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized barium and strontium lithol toners
Assignee: Wyeth Holdings LLC
•
Filing: 1949-09-27
•
Granted: 1952-06-24
•
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 17:50
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.
References Cited (Backward Citations)
US1806965A
Cited
US1077655A
Cited
CH117163A
Cited
US1927395A
Cited
US2138836A
Cited
US2174501A
Cited
US2375230A
Cited
US2306863A
Cited
US2335882A
Cited
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 |