Company Filing History:

21 out of 10,754

Basf Aktiengesellschaft

patents

1 out of 88

Badische Anilin- & Soda-fabrik Aktiengesellschaft

patents

Years Active: 1976-1996

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22 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5486363 - Preparation of choline chloride-containing powders, these powders, and (1996-01-23),

2. 5468883 - Preparation of vitamin E (1995-11-21),

3. 5300303 - Spray granules or microgranules of pure riboflavin which contain no (1994-04-05),

4. 5294740 - Preparation of formic acid by thermal cleavage of quaternary ammonium (1994-03-15),

5. 5210023 - Method of purifying ferment-produced riboflavin (1993-05-11),

6. 5206433 - Preparation of formic acid (1993-04-27),

7. 5189216 - Isolation of a carboxylic acid from an aqueous solution thereof (1993-02-23),

8. 5128151 - Stabilized menadione bisulfite formulations and their preparation (1992-07-07),

9. 5095115 - Preparation of riboflavin 5'-phosphate (FMN) and its sodium salt in a (1992-03-10),

10. 5017700 - Preparation of riboflavin-5'-phosphate (5'-FMN) and its sodium salt, and (1991-05-21),

11. 4977190 - Preparation of riboflavin, produced by a microbial method, in the form (1990-12-11),

12. 4921711 - Animal feed or drinking water containing propanediol formates (1990-05-01),

13. 4735969 - Menadione choline bisulfite adduct, its preparation and antihemorrhagic (1988-04-05),

14. 4701546 - Preparation of 2-(N-formylamino)-propionitrile (1987-10-20),

15. 4565894 - Preparation of ionones (1986-01-21),

Title: Hans Kiefer: Innovator in Choline Chloride and Vitamin E Preparations

Introduction

Hans Kiefer, based in Wachenheim, Germany, is a prolific inventor with a remarkable portfolio of 22 patents. His work primarily focuses on the preparation of specialized chemical compounds, particularly choline chloride and vitamin E.

Latest Patents

Among Kiefer's most recent patents is the innovative method for the preparation of choline chloride-containing powders. This process involves atomizing an aqueous choline chloride solution in a countercurrent-flowing air stream, alongside a finely dispersed hydrophobic spraying auxiliary. The auxiliary is metered to ensure the choline chloride droplets are coated with 2 to 15% by weight of the spraying auxiliary, based on the total weight of choline chloride. These coated particles can then be collected in a fluidized bed and subsequently dried in the gas stream. Additionally, Kiefer has made significant contributions to the preparation of vitamin E, further solidifying his status as a key innovator in his field.

Career Highlights

Kiefer's extensive career includes notable positions at prominent chemical companies. He has worked with BASF Aktiengesellschaft and Badische Anilin- & Soda-fabrik Aktiengesellschaft, both of which have played crucial roles in his professional development and contributions to the industry.

Collaborations

Throughout his career, Kiefer has collaborated with esteemed colleagues, including Heinz Hohenschutz and Johannes Grimmer. These collaborations have not only enriched his work but have also facilitated advancements in the chemical engineering sector.

Conclusion

Hans Kiefer's contributions to the fields of choline chloride and vitamin E preparation highlight his innovative spirit and dedication to scientific advancement. His patents serve as valuable assets to the chemical industry, and his collaborations reflect his commitment to teamwork and knowledge-sharing within the scientific community.

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