US3843781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smell-sweetening and deodorizing maleimides
Assignee: Kao Corp
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Filing: 1972-06-19
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Granted: 1974-10-22
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Expires: 1992-06-19
Abstract
Abstract A smell-sweetening and deodorizing agent comprising as an active ingredient a maleimide derivative expressed by the general formula: WHEREIN R1 stands for hydrogen or an organic group, and R2 and R3 are selected from the group consisting of hydrogen, halogen and organic groups, provided that R2 and R3 do not comprise parts of the same ring.
Inventors
- 👤 F Masuda
- 👤 M Nakajima
- 👤 Y Oyamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:55
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/01
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
42 words
A METHOD FOR DEODORIZING AND SWEETENING THE SMELL OF ODORIFERROUS MATERIALS AND OBJECTS CHARACTERIZED BY HAVING MERCAPTANS AND HYDROGEN SULFIDE AS A BAD-SMELLING COMPONENT, WHICH COMPRISES APPLYING TO SAID MATERIAL OR OBJECT AN EFFECTIVE DEODORIZING AMOUNT OF A COMPOUND OF THE FORMULA:
Claim 2
Independent Claim
42 words
A METHOD FOR DEODORIZING AND SWEETENING THE SMELL OF ODORIFERROUS MATERIALS AND OBJECTS CHARACTERIZED BY HAVING MERCAPTANS AND HYDROGEN SULFIDE AS A BAD-SMELLING COMPONENT, WHICH COMPRISES APPLYING TO SAID MATERIAL OR OBJECT AN EFFECTIVE DEODORIZING AMOUNT OF A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
47 words
The method according to claim 1, wherein said applying is accomplished by dissolving or suspending said deodorizing compound in water or a mixture of water and an alkanol having one to three carbon atoms, and applying the dissolved or suspended compound to the odoriferous material or object.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |