US3034922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble paper and method of making it
Assignee: Carl Freudenberg KG
•
Filing: 1959-07-23
•
Granted: 1962-05-15
•
Expires: 1979-07-23
Abstract
No abstract record available.
Inventors
- 👤 Boe Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:07
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; D04H1/74; D04H1/40; D04H1/58; D04H1/587; D04H1/64; D04H1/645; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/06; D21H17/07; D21H17/20; D21H17/21; D21H17/24; D21H17/25; D21H17/27; D21H17/28; D21H17/33; D21H17/34; D21H17/41; D21H17/42; D21H17/43; D21H17/63; D21H17/66; D21H17/67; D21H17/68; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/8305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A METHOD OF PRODUCING A WRITING PAPER WHICH IN WATER DISINTEGRATES INTO ITS INDIVIDUAL COMPONENTS, THE STEPS OF IMPREGNATING A FLEECE OF CARDABLE TEXTILE FIBRES WITH AN AQUEOUS DISPERSION COTAINING A WATER-INSOLUBLE FILLER MATERIAL AND A WATER-SOLUBLE FILM-FORMING BINDER IN SUCH AMOUNTS AS TO INCORPORATE SAID BINDER MATERIAL IN AN AMOUNT OF 40 TO 200 PERCENT, BASED UPON THE WEIGHT OF THE DRY FIBRE FLEECE, DRYING THE THUS RESULTING STRUCTURE, RE-WETTING SAID DRY STRUCTURE TO A MOISTURE CONTENT OF ABOUT 3 TO 10 PERCENT AND SMOOTHING IT ON A HEATED CALENDER AT A TEMPERATURE BETWEEN 50 AND 150*C.
Claim 2
Dependent Claim
99 words
IN A METHOD OF PRODUCING A WRITING PAPER WHICH IN WATER DISINTEGRATES INTO ITS INDIVIDUAL COMPONENTS, THE STEPS OF IMPREGNATING A FLEECE OF CARDABLE TEXTILE FIBRES WITH AN AQUEOUS DISPERSION COTAINING A WATER-INSOLUBLE FILLER MATERIAL AND A WATER-SOLUBLE FILM-FORMING BINDER IN SUCH AMOUNTS AS TO INCORPORATE SAID BINDER MATERIAL IN AN AMOUNT OF 40 TO 200 PERCENT, BASED UPON THE WEIGHT OF THE DRY FIBRE FLEECE, DRYING THE THUS RESULTING STRUCTURE, RE-WETTING SAID DRY STRUCTURE TO A MOISTURE CONTENT OF ABOUT 3 TO 10 PERCENT AND SMOOTHING IT ON A HEATED CALENDER AT A TEMPERATURE BETWEEN 50 AND 150*C.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |