US3035935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hectographic coloring paper having a transfer coat containing lower alkyl mercapto triphenyl carbinol
Assignee: Individual
•
Filing: 1959-11-30
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Granted: 1962-05-22
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Expires: 1979-11-30
Abstract
No abstract record available.
Inventors
- 👤 Harbort Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:10
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/025; B41M5/0253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A TRANSFER COLORING PAPER FOR THE ALCOHOL TRANSFER PROCESS IN AN ACID MEDIUM HAVING A COATING CONTAINING AS A COMPOUND FOR PRODUCING A COLORR REACTION A LOWER ALKYL MERCAPTO TRIPHENYL CARBINOL.
Claim 2
Dependent Claim
31 words
A TRANSFER COLORING PAPER FOR THE ALCOHOL TRANSFER PROCESS IN AN ACID MEDIUM HAVING A COATING CONTAINING AS A COMPOUND FOR PRODUCING A COLORR REACTION A LOWER ALKYL MERCAPTO TRIPHENYL CARBINOL.
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) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |