US3833520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling microbial growth in polyvinyl halide resin compositions
Assignee: KAY-FRIES Inc
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Filing: 1973-01-05
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Granted: 1974-09-03
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Expires: 1993-01-05
Abstract
Abstract RESISTANCE TO ATTACK BY FUNGI AND BACTERIA THAT IS RETAINED EVEN AFTER PROLONGED WEATHERING IS IMPARTED TO POLYVINYL HALIDE RESIN COMPOSITIONS BY INCORPORATING IN THEM A BIOCIDALLY-EFFECTIVE AMOUNT OF A SOLUTION THAT CONTAINS FROM 1 TO 3% OF N-TRICHLOROMETHYLTHIOPHTHANIMIDE IN A PO''YALKYLENE GLYCOL DIBENZOATE SOLVENT.
Inventors
- 👤 G Tirpak
- 👤 R Stanaback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:13
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |