Francis J. Leng

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Merseyside, GB

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Patents Grantslast 30 patents

Information Patent Grant
Concentrated liquid detergent composition containing anionic surfac...
- Patent number 4,880,569
- Issue date Nov 14, 1989
- Lever Brothers Company
- Francis J. Leng
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Grant
Detergent gel compositions in hexagonal liquid crystal form
- Patent number 4,615,819
- Issue date Oct 7, 1986
- Lever Brothers Company
- Francis J. Leng
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...