US3089409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Papermaking machines
Assignee: Kimberly Clark Corp
•
Filing: 1961-06-12
•
Granted: 1963-05-14
•
Expires: 1981-06-12
Abstract
No abstract record available.
Inventors
- 👤 Donald G Tretheway
- 👤 Richard O Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:57
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/08; D21F3/086
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
IN A MACERATING AND DEWATERING APPARATUS HAVING CIRCUMFERENTIALLY GROOVED PRESS ROLLS, A PAIR OF COACTING, NIP-FORMING ROLLS EACH COMPRISING AN ASSEMBLY OF ANNULAR SEGMENTS OF MILD STEEL, THE SURFACE OF EACH OF SAID SEGMENTS BEING CIRCUMFERENTIALLY GROOVED, THE GROOVED SURFACE OF EACH OF SAID SEGMENTS HAVING A SPRAY-APPLIED
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |