Patent US2808184A successfully refreshed from Google Patents.
Patent US2516384A successfully refreshed from Google Patents.
US2516384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanically curling cellulose fibers
Assignee: Individual
•
Filing: 1944-11-25
•
Granted: 1950-07-25
•
Expires: 1964-11-25
Abstract
No abstract record available.
Inventors
- 👤 Hill Harold Sanford
- 👤 Edwards Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:51
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/10; D21C9/1026; D21B; D21B1/00; D21B1/04; D21B1/12; D21C5/00; D21C5/02; D21C9/001; D21C9/007; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD OF PROCESSING PAPERMAKING PULP WHICH COMPRISES DEWATERING AN AQUEOUS SUSPENSION OF PULP FIBRES TO HIGH CONSISTENCY, WORKING THE PULP INTO THE FORM OF SMALL, MOIST, DISCRETE, CRUMB-LIKE NODULES IN WHICH THE FIBRES ARE RANDOMLY INTERTWINED, COMPRESSING THE NODULES BETWEEN OPPOSED WORKING SURFACES WHICH ARE ROUGHENED TO PROVIDE TRACTION FOR THE NODULES WITHOUT OBSTRUCTING ROLLING TRAVERSE OF THE NODULES ON THE SURFACES, AND ROLLING THE NODULES TRAVERSINGLY ON THE SURFACES WHILE CHANGING CONTINUALLY THE DIRECTION IN WHICH THE NODULES TRAVERSE THE SURFACES AND WHILE KEEPING THE NODULES UNDER COMPRESSION, THEREBY TO REORIENT THE NODULES CONTINUALLY WITH REFERENCE TO THE DIRECTION OF COMPRESSION.
Claim 2
Independent Claim
103 words
THE METHOD OF PROCESSING PAPERMAKING PULP WHICH COMPRISES DEWATERING AN AQUEOUS SUSPENSION OF PULP FIBRES TO HIGH CONSISTENCY, WORKING THE PULP INTO THE FORM OF SMALL, MOIST, DISCRETE, CRUMB-LIKE NODULES IN WHICH THE FIBRES ARE RANDOMLY INTERTWINED, COMPRESSING THE NODULES BETWEEN OPPOSED WORKING SURFACES WHICH ARE ROUGHENED TO PROVIDE TRACTION FOR THE NODULES WITHOUT OBSTRUCTING ROLLING TRAVERSE OF THE NODULES ON THE SURFACES, AND ROLLING THE NODULES TRAVERSINGLY ON THE SURFACES WHILE CHANGING CONTINUALLY THE DIRECTION IN WHICH THE NODULES TRAVERSE THE SURFACES AND WHILE KEEPING THE NODULES UNDER COMPRESSION, THEREBY TO REORIENT THE NODULES CONTINUALLY WITH REFERENCE TO THE DIRECTION OF COMPRESSION.
References Cited (Backward Citations)
US2172704A
Cited
US487912A
Cited
US487913A
Cited
US47425A
Cited
US657206A
Cited
US758874A
Cited
US1535834A
Cited
US1795603A
Cited
US1881419A
Cited
US1914184A
Cited
US1991499A
Cited
US1962164A
Cited
US2035994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-24 | 1954-01-23 | 1954-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-24 | 1958-01-23 | 1958-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-24 | 1962-01-23 | 1962-07-25 | $7700.00 | Window Closed / Lapsed |