US3836383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive recording paper
Assignee: Fujifilm Holdings Corp
•
Filing: 1971-10-27
•
Granted: 1974-09-17
•
Expires: 1991-10-27
Abstract
Abstract WHEREIN N IS AN INTEGER OF 1 TO 8, R and R'' each represent a member selected from the group consisting of alkyl groups containing one to eight carbon atoms, and a hydrogen atom, p and q represent the number of alkyl groups, p + q being an integer of 1 to 3, and R and R'' may be the same. A pressure-sensitive recording paper comprising a support having coated thereon a layer of color former, said color former dissolved in at least one compound represented by the following formula:
Inventors
- 👤 M Kiritani
- 👤 H Matsukawa
- 👤 M Aoki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:10
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/165; B41M5/1655; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24835; Y10T428/29; Y10T428/2982; Y10T428/2984
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
22 words
The pressure sensitive recording paper as claimed in claim 1, wherein said compound is a member selected from the group consisting of:
Claim 2
Dependent Claim
35 words
The pressure sensitive recording paper of claim 1, wherein said compound is used as a mixture with a solvent selected from the group consisting of a petroleum fraction, a synthetic oil and a plant oil.
Claim 3
Dependent Claim
19 words
The pressure sensitive recording paper of claim 1, wherein said color former and said compound are contained in microcapsules.
Claim 4
Dependent Claim
26 words
The pressure sensitive recording paper of claim 3, wherein said petroleum fraction is a member selected from the group consisting of liquid paraffin, kerosene and naphtha.
Claim 5
Dependent Claim
30 words
The pressure sensitive recording paper of claim 3, wherein said synthetic oil is a member selected from the group consisting of chlorinated paraffin, chlorinated diphenyl, hexahydroterphenyl, alkylnaphthalenes and alkylated polyphenyls.
Claim 6
Dependent Claim
26 words
The pressure sensitive recording paper of claim 3, wherein said plant oil is a member selected from the group consisting of cottonseed oil and linseed oIl.
References Cited (Backward Citations)
US3009760A
Cited
US3016308A
Cited
GB915342A
Cited
US3649649A
Cited
US3625736A
Cited
US3627581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |