US3843557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microcapsules and method of making same
Assignee: Mennen Co
•
Filing: 1971-10-05
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Granted: 1974-10-22
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Expires: 1991-10-05
Abstract
Abstract 1. A MICROCAPSULE RESISTANT TO PENETRATION BY WATER AND OTHER POLAR LIQUIDS WHICH COMPRISES A SOLID, WATER SENSITIVE CORE AND A WALL, SAID WALL COMPRISING A FIRST LAYER OF A HYDROCARBON OR HALOGENATED HYDROCARBON LIQUID AND A SECOND LAYER OF A FILM-FORMING WATER-INSOLUBLE POLYMERIC ORGANIC MATERIAL INSOLUBLE IN AND SUBSTANTIALLY NON-SWELLABLE BY BUT PERMEABLE TO HYDROCARBON AND HALOGENATED HYDROCARBON SOLVENTS.
Inventors
- 👤 G Fanger
- 👤 J Flinn
- 👤 R Hollingsworth
- 👤 H Nack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:24
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/20; B01J13/22; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2989; Y10T428/2991
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A MICROCAPSULE RESISTANT TO PENETRATION BY WATER AND OTHER POLAR LIQUIDS WHICH COMPRISES A SOLID, WATER SENSITIVE CORE AND A WALL, SAID WALL COMPRISING A FIRST LAYER OF A HYDROCARBON OR HALOGENATED HYDROCARBON LIQUID AND A SECOND LAYER OF A FILM-FORMING WATER-INSOLUBLE POLYMERIC ORGANIC MATERIAL INSOLUBLE IN AND SUBSTANTIALLY NON-SWELLABLE BY BUT PERMEABLE TO HYDROCARBON AND HALOGENATED HYDROCARBON SOLVENTS.
Claim 2
Dependent Claim
59 words
A MICROCAPSULE RESISTANT TO PENETRATION BY WATER AND OTHER POLAR LIQUIDS WHICH COMPRISES A SOLID, WATER SENSITIVE CORE AND A WALL, SAID WALL COMPRISING A FIRST LAYER OF A HYDROCARBON OR HALOGENATED HYDROCARBON LIQUID AND A SECOND LAYER OF A FILM-FORMING WATER-INSOLUBLE POLYMERIC ORGANIC MATERIAL INSOLUBLE IN AND SUBSTANTIALLY NON-SWELLABLE BY BUT PERMEABLE TO HYDROCARBON AND HALOGENATED HYDROCARBON SOLVENTS.
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 |