Leszek Doszczak

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Amersfoort, NL

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Patents Grantslast 30 patents

Information Patent Grant
Odorous acetals of ethyl vanillin and ethyl vanillin derivatives
- Patent number 11,661,565
- Issue date May 30, 2023
- S H KELKAR & COMPANY LIMITED
- Leszek Doszczak
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Grant
Odorants and compositions comprising odorants
- Patent number 11,549,079
- Issue date Jan 10, 2023
- S H KELKAR & COMPANY LIMITED
- Freddy Post
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Grant
Odorants and compositions comprising odorants
- Patent number 11,447,715
- Issue date Sep 20, 2022
- S H KELKAR & COMPANY LIMITED
- Freddy Post
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Compositions comprising odorants
- Patent number 11,072,761
- Issue date Jul 27, 2021
- S H KELKAR AND COMPANY LIMITED
- Freddy Post
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES

Patents Applicationslast 30 patents

Information Patent Application
ODORANT SECONDARY ALCOHOLS AND THEIR COMPOSITIONS
- Publication number 20210284929
- Publication date Sep 16, 2021
- S H KELKAR AND COMPANY LIMITED
- Freddy POST
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
ODORANTS AND COMPOSITIONS COMPRISING ODORANTS
- Publication number 20210207059
- Publication date Jul 8, 2021
- S H KELKAR & COMPANY LIMITED
- Freddy Post
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
ODOROUS ACETALS OF ETHYL VANILLIN AND ETHYL VANILLIN DERIVATIVES
- Publication number 20200399560
- Publication date Dec 24, 2020
- S H KELKAR AND COMPANY LIMITED
- Leszek DOSZCZAK
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Application
ODORANTS AND COMPOSITIONS COMPRISING ODORANTS
- Publication number 20200299611
- Publication date Sep 24, 2020
- S H KELKAR & COMPANY LIMITED
- Freddy Post
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
COMPOSITIONS COMPRISING ODORANTS
- Publication number 20200157461
- Publication date May 21, 2020
- S H KELKAR AND COMPANY LIMITED
- Freddy Post
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES