US3630818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight nonwoven fabric of increased opacity
Assignee: Monsanto Co
•
Filing: 1969-07-22
•
Granted: 1971-12-28
•
Expires: 1989-07-22
Abstract
Abstract A lightweight nonwoven fabric having a high degree of opacity comprises a nonwoven web of continuous synthetic polyamide filaments autogenously bonded together and short lengths of polyamide ligaments dispersed among the continuous filaments.
Inventors
- 👤 Emerick J Dobo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:40
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/14; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T442/00; Y10T442/60; Y10T442/69
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
13 words
The fabric of claim 1 wherein said fabric weighs less than 1.0 oz./yd.2.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |