US3877922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Algicidal dihalomethylglutaronitriles
Assignee: Merck and Co Inc
•
Filing: 1974-06-19
•
Granted: 1975-04-15
•
Expires: 1994-06-19
Abstract
Abstract Antimicrobial 2-halo-2-halomethylglutaronitriles are prepared by the halogenation of 2-methyleneglutaronitrile.
Inventors
- 👤 Nathaniel Grier
- 👤 Seymour J Lederer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:26
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/34; A01N2300/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
THE METHOD OF CONTROLLING THE GROWTH OF ALGAE WHICH COMPRISES CONTACTING THE AREA UPON WHICH THE GROWTH OF ALGAE IS TO BE CONTROLLED WITH AN ALGICIDALLY EFFECTIVE AMOUNT OF 2BROMO-2-BROMOMETHYLGLUTARONITRILE.
Claim 2
Independent Claim
30 words
THE METHOD OF CONTROLLING THE GROWTH OF ALGAE WHICH COMPRISES CONTACTING THE AREA UPON WHICH THE GROWTH OF ALGAE IS TO BE CONTROLLED WITH AN ALGICIDALLY EFFECTIVE AMOUNT OF 2BROMO-2-BROMOMETHYLGLUTARONITRILE.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |