Patent US4741847A successfully refreshed from Google Patents.
US4741847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous anti-corrosion agent containing an ammonium salt of 2-benzthiazolythiocarboxylic acid
Assignee: Hoechst AG
•
Filing: 1986-02-18
•
Granted: 1988-05-03
•
Expires: 2006-02-18
Abstract
Abstract The use of 2-benzthiazolylthiocarboxylic acid ammonium salts of the formula <IMAGE> wherein n denotes a number from 1 to 6 and M denotes an organic ammonium ion as a corrosion-inhibiting agent in aqueous functional fluids, in particular in aqueous cooling lubricants.
Inventors
- 👤 Francesco Cargnino
- 👤 Giuseppe Natoli
- 👤 Horst Lorke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:16
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C23F11/165; C10; C10M; C10M135/00; C10M135/32; C10M135/36; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
27 words
An aqueous anticorrosion agent containing a compound of the formula ##STR3## wherein n denotes a number from 1 to 6 and M denotes an organic ammonium ion.
Claim 2
Dependent Claim
27 words
An aqueous anticorrosion agent containing a compound of the formula ##STR3## wherein n denotes a number from 1 to 6 and M denotes an organic ammonium ion.
Claim 3
Dependent Claim
24 words
An aqueous anticorrosion agent as claimed in claim 1, wherein said compound is present in an amount ranging from 0.3 to 5% by weight.
Claim 4
Dependent Claim
27 words
An aqueous cooling lubricant containing a compound of the formula ##STR4## wherein n denotes a number from 1 to 6 and M denotes an organic ammonium ion.
Claim 5
Dependent Claim
27 words
An aqueous cooling lubricant containing a compound of the formula ##STR4## wherein n denotes a number from 1 to 6 and M denotes an organic ammonium ion.
Claim 6
Dependent Claim
24 words
An aqueous cooling lubricant as claimed in claim 3, wherein said compound is present in an amount ranging from 0.3 to 5% by weight.
References Cited (Backward Citations)
NL258098A
Cited
US2425426A
Cited
US2154097A
Cited
US3080314A
Cited
US3215641A
Cited
US3166563A
Cited
US3536706A
Cited
US3537999A
Cited
US3663559A
Cited
US4113637A
Cited
US4177155A
Cited
US4367152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |