US2734871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
White fluorescing marking inks for
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:00
CPC Classifications
C; C09; C09B; C09B57/00; D; D06; D06P; D06P1/00; D06P1/38; C09K; C09K11/00; C09K11/06; D06P3/00; D06P3/58; D06P3/60; D06P3/66; D06P5/00; D06P5/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
62 words
AN INK FOR TEXTILE IDENTIFICATIN HAVING A LIQUID CARRYING VEHICLE, OF A VISCOSITY AND DRYING RATE SUITABLE FOR USE IN A MARKING DEVICE, AND A NORMALLY INVISIBLE DYESTUFF COMPOUND DISSOLVED IN THE LIQUID VEHICLE, SAID INVISIBLE DYESTUFF COMPOUND CHARACTERIZED BY WHITE FLUORESCENCE UNDER ULTRAVIOLET LIGHT AND CONSISTING OF AN AROMATIC POLYACYL DERIVATIVE OF DIAMINO STILBENE DISULFONIC ACID HAVING THE GENERAL STRUCTURAL FORMULA
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) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |