US3214282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparation of carbon transfer inks
Assignee: International Business Machines Corp
•
Filing: 1963-05-02
•
Granted: 1965-10-26
•
Expires: 1983-05-02
Abstract
No abstract record available.
Inventors
- 👤 Hansel L Mcgee
- 👤 Paul M Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:44
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/12; C10; C10M; C10M2205/00; C10M2205/18; C10M2215/00; C10M2215/12; C10N; C10N2050/00; C10N2050/08; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
THE METHOD OF PREPARING CARBON TRANSFER INKS OF THE HOT MELT TYPE, WHEREIN AT LEAST ONE AMIDO-ESTER SYNTHETIC WAX COMPOUND USED AS THE WAX MEDIUM OF SAID INKS IS SELECTED FROM THE CLASS OF COMPOUNDS HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Independent Claim
40 words
THE METHOD OF PREPARING CARBON TRANSFER INKS OF THE HOT MELT TYPE, WHEREIN AT LEAST ONE AMIDO-ESTER SYNTHETIC WAX COMPOUND USED AS THE WAX MEDIUM OF SAID INKS IS SELECTED FROM THE CLASS OF COMPOUNDS HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US1930429A
Cited
US2402559A
Cited
US2427255A
Cited
US2546328A
Cited
US2561816A
Cited
US2742432A
Cited
US2783206A
Cited
US2890124A
Cited
US2890125A
Cited
US3071479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |