US3521638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrics having water soluble discrete areas and methods of making
Assignee: EIDP Inc
•
Filing: 1969-02-10
•
Granted: 1970-07-28
•
Expires: 1989-02-10
Abstract
No abstract record available.
Inventors
- 👤 Robert Guy Parrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:49
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/15203; A61F13/15211; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/28; A61F13/20; A61F13/2002; A61F13/202; A61F13/51; A61F13/514; A61F13/51401; A61F2013/51409; A61F13/53; A61F2013/530131; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24835
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |