US3034925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-resistant and oil-resistant fibrous substances, and processes therefor
Assignee: Individual
•
Filing: 1961-02-02
•
Granted: 1962-05-15
•
Expires: 1981-02-02
Abstract
No abstract record available.
Inventors
- 👤 Marco Carlo G De
- 👤 Gil M Dias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:15
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/07; D21H17/11; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31993; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2172
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
PROCESS FOR RENDERING A FIBROUS SUBSTANCE WATERRESISTANT AND OIL-RESISTANT, COMPRISING APPLYING TO SAID FIBROUS SUBSTANCE A PYRIDINIUM COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
22 words
PROCESS FOR RENDERING A FIBROUS SUBSTANCE WATERRESISTANT AND OIL-RESISTANT, COMPRISING APPLYING TO SAID FIBROUS SUBSTANCE A PYRIDINIUM COMPOUND HAVING THE GENERAL FORMULA
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) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |