US3140974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions and processes for the treatment of fourdrinier wire cloths of papermaking machines
Assignee: Buckman Laboratories Inc
•
Filing: 1961-07-03
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Granted: 1964-07-14
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Expires: 1981-07-03
Abstract
No abstract record available.
Inventors
- 👤 John D Pera
- 👤 Fred W Raths
- 👤 Robert F Drescher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:05
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; D; D21; D21F; D21F1/00; D21F1/10; D21F1/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A FOURDRINIER WIRE CLOTH FORMED OF STRANDS OF COPPER-CONTAINING ALLOY WIRES CARRYING A FILM CONTAINING 2-MERCAPTOBENZOTHIAZOLE AND 2-AMINOETHANOL.
Claim 2
Dependent Claim
18 words
A FOURDRINIER WIRE CLOTH FORMED OF STRANDS OF COPPER-CONTAINING ALLOY WIRES CARRYING A FILM CONTAINING 2-MERCAPTOBENZOTHIAZOLE AND 2-AMINOETHANOL.
References Cited (Backward Citations)
US2017640A
Cited
US2582857A
Cited
US2775170A
Cited
US2941953A
Cited
US3008869A
Cited
US3002882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |