US2567965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blue printing ink
Assignee: STWB Inc
•
Filing: 1948-11-12
•
Granted: 1951-09-18
•
Expires: 1968-11-12
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Petke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:56
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A BLUE PRINTING INK COMPRISING AN ORGANIC SOLVENT, A RESINOUS BINDER SUBSTANTIALLY SOLUBLE IN SAID SOLVENT, AND A BLUE PIGMENT CONSISTING ESSENTIALLY OF A WATER INSOLUBLE SALT CONSISTING OF THE ANION OF ERIOGLAUCINE A, COLOUR INDEX NO. 671, AND AN ORGANIC AMMONIUM CATION CONTAINING 14 TO 35 CARBON ATOMS.
Claim 2
Dependent Claim
49 words
A BLUE PRINTING INK COMPRISING AN ORGANIC SOLVENT, A RESINOUS BINDER SUBSTANTIALLY SOLUBLE IN SAID SOLVENT, AND A BLUE PIGMENT CONSISTING ESSENTIALLY OF A WATER INSOLUBLE SALT CONSISTING OF THE ANION OF ERIOGLAUCINE A, COLOUR INDEX NO. 671, AND AN ORGANIC AMMONIUM CATION CONTAINING 14 TO 35 CARBON ATOMS.
References Cited (Backward Citations)
US2038298A
Cited
US2022673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |