US3305436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic phosphorus-containing wet strength resin colloid and paper having a contentthereof
Assignee: Formica Corp
•
Filing: 1964-06-12
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Granted: 1967-02-21
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Expires: 1984-06-12
Abstract
No abstract record available.
Inventors
- 👤 Henry P Wohnsiedler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:49
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/26; C08G12/30; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/49; D21H17/51
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
AN AQUEOUS ACID SOLUTION OF THERMOSETTING POLYHYDROXYMETHYL TRIS((4,6 - DIAMINO - S-TRIAZINE-2-) - YL)ETHYL PHOSPHINE OXIDE IN CATIONIC COLOIDAL STATE.
Claim 2
Dependent Claim
20 words
AN AQUEOUS ACID SOLUTION OF THERMOSETTING POLYHYDROXYMETHYL TRIS((4,6 - DIAMINO - S-TRIAZINE-2-) - YL)ETHYL PHOSPHINE OXIDE IN CATIONIC COLOIDAL STATE.
Claim 3
Dependent Claim
24 words
WET STRENGTH PAPER COMPOSED OF WATER-LAID CELLULOSE PAPER-MAKING FIBERS BONDED TOGETHER BY A NORMALLY COLLOIDAL CATIONIC POLYHYDROXYMETHYL TRIS((4,6-DIAMINO-STRIAZINE-2-)-YL)ETHYL PHOSPHINE OXIDE RESIN IN THERMOSET STATE.
Claim 4
Dependent Claim
24 words
WET STRENGTH PAPER COMPOSED OF WATER-LAID CELLULOSE PAPER-MAKING FIBERS BONDED TOGETHER BY A NORMALLY COLLOIDAL CATIONIC POLYHYDROXYMETHYL TRIS((4,6-DIAMINO-STRIAZINE-2-)-YL)ETHYL PHOSPHINE OXIDE RESIN IN THERMOSET STATE.
References Cited (Backward Citations)
US2983623A
Cited
US3210350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |