Patent US3676239A successfully refreshed from Google Patents.
US3676239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing spray spun nonwoven sheets
Assignee: Veolia WTS Solutions USA Inc
•
Filing: 1970-12-08
•
Granted: 1972-07-11
•
Expires: 1990-12-08
Abstract
Abstract A THREE-DENENSIONAL NONWOVEN FIBROUS ASSEMBLY HAVING AN UPPER AND LOWER SURFACE INDENTED TO GIVE A PUCKERED EFFECT AND A METHOD OF PRODUCING THIS ASSEMBLY BY SPRAY SPINNING DIRECTLY INTO A ZONE AT LEAST PARTIALLY OCCUPIED BY CONVERGENT PORTIONS OF A PAIR OF MOVING COLLECTION SURFACES, HAVING A SERIES OF SPACED PROJECTIONS ON THEIR RESPECTIVE SURFACES WHICH CONSTITUTE THE PRIMARY COLLECTION LOCI.
Inventors
- 👤 John W Soehngen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:16
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/16; D04H11/00; D04H11/08; D04H3/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T428/00; Y10T428/23907; Y10T428/23986
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |