US3208451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanitary napkin
Assignee: Celanese Corp
•
Filing: 1959-02-26
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Granted: 1965-09-28
•
Expires: 1979-02-26
Abstract
No abstract record available.
Inventors
- 👤 Stephen L Porter
- 👤 Auville Calvin
- 👤 Allen R Winch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:31
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/10; A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F2013/00089; A61F2013/00238; A61F2013/15008; A61F2013/15048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A SANITARY NAPKIN COMPRISING AN ABSORBENT PAD AND A FABRIC COVERING SAID PAD, SAID FABRIC BEING WARP-KNIT OF A PLURALITY OF SETS OF CONTINUOUS FILAMENT CELLULOSE ACETATE YARNS OF ABOUT 10 TO ABOUT 150 DENIER INTO AN OPEN CONSTRUCTION WHICH IMPARTS THERETO A LOW STRETCH WALE-
Claim 2
Dependent Claim
46 words
A SANITARY NAPKIN COMPRISING AN ABSORBENT PAD AND A FABRIC COVERING SAID PAD, SAID FABRIC BEING WARP-KNIT OF A PLURALITY OF SETS OF CONTINUOUS FILAMENT CELLULOSE ACETATE YARNS OF ABOUT 10 TO ABOUT 150 DENIER INTO AN OPEN CONSTRUCTION WHICH IMPARTS THERETO A LOW STRETCH WALE-
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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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |