Patent US2803557A successfully refreshed from Google Patents.
US2803557A
Expired / Lapsed
US
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Release coating for pressure sensitive adhesive sheet material and process of making a sheet coated with the same
Assignee: Fort James Corp
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Filing: 1953-01-23
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Granted: 1957-08-20
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Expires: 1973-01-23
Abstract
No abstract record available.
Inventors
- 👤 John B Martin
- 👤 Chester S Funk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:58
CPC Classifications
C; C09; C09J; C09J119/00; C09J119/003; C09J7/00; C09J7/40; C09J7/401; C09J2400/00; C09J2400/20; C09J2400/28; C09J2400/283; C09J2401/00; C09J2401/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A RELEASE COATING FOR PRESSURE SENSITIVE ADHESIVE TAPES COMPRISING: HYDROXYETHYL CELLULOSE AND A COMPLEX COMPOUND OF THE WERNER TYPE IN WHICH A TRIVALENT NUCLEAR CHROMIUM ATOM IS COORDINATED WITH AN ACYCLIC CARBOXYLIC ACID HAVING FROM 12 TO 18 CARBON ATOMS, INCLUSIVE.
Claim 2
Dependent Claim
41 words
A RELEASE COATING FOR PRESSURE SENSITIVE ADHESIVE TAPES COMPRISING: HYDROXYETHYL CELLULOSE AND A COMPLEX COMPOUND OF THE WERNER TYPE IN WHICH A TRIVALENT NUCLEAR CHROMIUM ATOM IS COORDINATED WITH AN ACYCLIC CARBOXYLIC ACID HAVING FROM 12 TO 18 CARBON ATOMS, INCLUSIVE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |