Patent US3620802A successfully refreshed from Google Patents.
US3620802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplicating ribbons and process
Assignee: Columbia Ribbon and Carbon Manufacturing Co Inc
•
Filing: 1969-12-08
•
Granted: 1971-11-16
•
Expires: 1989-12-08
Abstract
Abstract Process for producing novel fabric duplicating ribbons having improved ink-receptivity formed from synthetic thermoplastic filaments, in which the ribbons are rendered more ink-receptive by contact at elevated temperatures with vapor of a compound of titanium, silicon or germanium in the presence of moisture, and are thereafter impregnated with ink.
Inventors
- 👤 Douglas A Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:06
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/46; B; B41; B41J; B41J31/00; B41J31/02; B41J31/04; D06M11/07; D06M11/11; D06M11/20; D06M11/77; D06M11/78; D06M11/79; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
26 words
The process of claim 1 in which the fabric is impregnated with the hydrolyzable compound in vapor form at a temperature in excess of 100* C.
Claim 2
Dependent Claim
28 words
The process of claim 1 in which the fabric is impregnated with a solution of the hydrolyzable compound in a volatile solvent and the solvent is thereafter evaporated.
Claim 3
Dependent Claim
31 words
The process according to claim 1 in which the compound is a titanium compound selected from the group consisting of titanium tetrachloride, tetrabutyl titanate, polybutyl titanate, tetraisopropyl titanate and tetrastearyl-tetraisopropyl titanate.
Claim 4
Dependent Claim
36 words
The process according to claim 1 in which the fabric comprises said filaments which are formed into the fabric by twisting a number of them together to form multifilament yarns which are woven into the fabric.
Claim 5
Dependent Claim
12 words
The process according to claim 1 in which the filaments comprise nylon.
Claim 6
Dependent Claim
12 words
A duplicating ribbon made in accordance with the process of claim 1.
Claim 7
Dependent Claim
12 words
A duplicating ribbon made in accordance with the process of claim 4.
Claim 8
Dependent Claim
12 words
A duplicating ribbon made in accordance with the process of claim 5.
Claim 9
Dependent Claim
12 words
A duplicating ribbon made in accordance with the process of claim 6.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |