US3335449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper wiper
Assignee: Kimberly Clark Tissue Co
•
Filing: 1963-11-01
•
Granted: 1967-08-15
•
Expires: 1983-11-01
Abstract
No abstract record available.
Inventors
- 👤 Robert W Faessinger
- 👤 John S Conte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:10
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/09; C; C11; C11D; C11D17/00; C11D17/04; C11D17/049; C11D7/00; C11D7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PAPER SHEET WHICH HAS BEEN WET-STRENGTHENED WITH A FORMALDEHYDE BASE WET-STRENGTH RESIN AND WHICH COMPRISES A MINOR AMOUNT OF AT LEAST ONE SULFAMATE COMPOUND SELECTED FROM THE CLASS CONSISTING OF DIALKY AMMONIUM SULFAMATIES, TRIALKYL AMMONIUM SULFAMATES, DI(HYDROXYALKYL) AMMONIUM SULFAMATES, TRI(HYDROXYALKYL) AMMONIUM SULFAMATES, ALKYL (HYDROXYALKYL) AMMONIUM SULFAMATES, DIALKYL (HYDROXYALKYL) AMMONIUM SULFATES AND DI (HYDROXYALKY) ALKYL AMMONIUM SULFAMATES WHEREIN THE ALKYL GROUPS OR HYDROXYALKYL GROUPS ARE GROUPS WHICH CONTAIN 1 TO 4 CARBON ATOMS.
Claim 2
Dependent Claim
73 words
A PAPER SHEET WHICH HAS BEEN WET-STRENGTHENED WITH A FORMALDEHYDE BASE WET-STRENGTH RESIN AND WHICH COMPRISES A MINOR AMOUNT OF AT LEAST ONE SULFAMATE COMPOUND SELECTED FROM THE CLASS CONSISTING OF DIALKY AMMONIUM SULFAMATIES, TRIALKYL AMMONIUM SULFAMATES, DI(HYDROXYALKYL) AMMONIUM SULFAMATES, TRI(HYDROXYALKYL) AMMONIUM SULFAMATES, ALKYL (HYDROXYALKYL) AMMONIUM SULFAMATES, DIALKYL (HYDROXYALKYL) AMMONIUM SULFATES AND DI (HYDROXYALKY) ALKYL AMMONIUM SULFAMATES WHEREIN THE ALKYL GROUPS OR HYDROXYALKYL GROUPS ARE GROUPS WHICH CONTAIN 1 TO 4 CARBON ATOMS.
References Cited (Backward Citations)
US2483135A
Cited
US2714094A
Cited
US2316220A
Cited
US2514955A
Cited
US2896242A
Cited
US3121249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |