Patent US4978770A successfully refreshed from Google Patents.
US4978770A
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Quaternary ammonium salts of dicyano substituted teriary alkylene diamines as bleach activators
Assignee: Kao Corp
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Filing: 1990-03-30
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Granted: 1990-12-18
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Expires: 2010-03-30
Abstract
Abstract A bleaching composition comprises (a) a peroxide and (b) an organic peracid precursor having at least one group selected from (b-1) and (b-2) and then further comprises a detergent component(s). ##STR1##
Inventors
- 👤 Muneo Aoyagi
- 👤 Kazuhiro Takanashi
- 👤 Masaaki Yamamura
- 👤 Moriyasu Murata
- 👤 Hiroyuki Yamada
- 👤 Hiroyuki Araki
- 👤 Takanori Fukumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:20
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/395; C07; C07C; C07C255/00; C07C255/01; C07C255/24; C07C255/25; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/3917; C11D3/3925; C11D3/3945
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
42 words
A compound having the formula ##STR50## in which each of R 1 , R 2 , R 3 and R 4 is alkyl having 1 to 6 carbon atoms, n is an integer of 1 to 16 and X is an anion.
Claim 2
Dependent Claim
42 words
A compound having the formula ##STR50## in which each of R 1 , R 2 , R 3 and R 4 is alkyl having 1 to 6 carbon atoms, n is an integer of 1 to 16 and X is an anion.
Claim 3
Dependent Claim
37 words
A compound as claimed in claim 1, in which in the formula each of R1, R2, R3 and R4 is an alkyl having 1 to 3 carbon atoms and n is an integer of 1 to 9.
Claim 4
Dependent Claim
28 words
A compound as claimed in claim 1, in which in the formula R1, R2, R3 and R4 are methyl and n is an integer of 1 to 9.
References Cited (Backward Citations)
US2927840A
Cited
US3281452A
Cited
US3756774A
Cited
US3882035A
Cited
US4297743A
Cited
US4199466A
Cited
US4211804A
Cited
US4397757A
Cited
EP0186052A1
Cited
US4756845A
Cited
US4818426A
Cited
US4915863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-17 | 1994-06-18 | 1994-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-17 | 1998-06-18 | 1998-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-17 | 2002-06-18 | 2002-12-18 | $7700.00 | Window Closed / Lapsed |