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For the Inventor, By the Inventor

Northford, CT, United States of America

Henri Ulrich

This inventor holds 21 USPTO granted patents, primarily in Polyurethane Chemistry. Top assignee: The Upjohn Co.. Active years: 1976-1982.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Henri Ulrich. Retrieved from https://idiyas.com/inventor/henri-ulrich

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 21

% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 6

Forward Citations = 132(Granted Patents)


Location History:

  • North Branford, CT (US) (1976)
  • Northford, CT (US) (1976 - 1980)
  • Guilford, CT (US) (1982)

Company Filing History:

goldMedal21 out of 2,170 
 
The Upjohn Co.
 patents

Years Active: 1976-1982

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Areas of Expertise:
Polyurethane
Diisocyanates
Fire Retardants
Cyclic Ureas
Phosphorus Compounds
Aromatic Hydrocarbons
Polyimides
Photosensitizers
MDA Purification
Reclaiming Foam
Hydroxy Substituted
Alkylene Diazetidine
21 patents (USPTO):Explore Patents
1. 4339381 - 1,3-Alkylene-diazetidine-2,4-diones (1982-07-13),
2. 4217436 - Polyurethane forming compositions (1980-08-12),
3. 4202946 - Fire retardant polyurethanes prepared from hydroxy substituted (1980-05-13),
4. 4202779 - Mixture of bis(2-hydroxyalkyl) N,N-di(lower (1980-05-13),
5. 4190599 - Amide-containing diisocyanates and preparation thereof (1980-02-26),
6. 4173602 - Process for preparing spirocyclic phosphorus compounds (1979-11-06),
7. 4154931 - Process for the preparation of cyclic ureas (1979-05-15),
8. 4138398 - Bis-cyclic ureas (1979-02-06),
9. 4123466 - Process for nitrating aromatic hydrocarbons (1978-10-31),
10. 4112014 - O,O'-Bis(hydroxyalkyl) N,N-di(lower-alkyl)aminomethane phosphonates (1978-09-05),
11. 4092343 - Polymethylene polyphenyl polyisocyanate (1978-05-30),
12. 4051166 - Araliphatic diisocyanates (1977-09-27),
13. 4039581 - Process for the preparation of di(amino phenyl)methanes (1977-08-02),
14. 4039580 - Process for preparing di(aminophenyl)methanes (1977-08-02),
15. 4029705 - Purification process for MDA (1977-06-14),

Title: **Innovative Contributions of Henri Ulrich in Polymer Chemistry**

Introduction

Henri Ulrich, based in Northford, CT, is an influential inventor known for his significant contributions to the field of polymer chemistry. With a remarkable tally of 21 patents, Ulrich has demonstrated a strong commitment to innovation, particularly in the development of novel chemical compounds used in various applications.

Latest Patents

Among Henri Ulrich's latest patents are the 1,3-alkylene-diazetidine-2,4-diones and 1,3-alkylene-diazetidinediones-2,4. These compounds, which contain at least eight carbon atoms in their alkylene groups, are innovative intramolecular dimers of alkylene diisocyanates. They exhibit stability when stored alongside other reactive substances, such as polyols and polyamines. This characteristic allows for a strategic conversion to free diisocyanates through heating, making them valuable for forming polymers in a variety of industrial processes. Additionally, Ulrich has developed novel bis cyclic ureas that are easily transformed into a new class of aliphatic diisocyanates, leading to advancements in the production of polyurethane resins.

Career Highlights

Henri Ulrich has made substantial strides during his career at The Upjohn Company. His innovative spirit and technical expertise have led to the discovery of new chemical formulas that enhance the stability and effectiveness of polyurethane compositions. This has positioned him as a prominent figure in his field, contributing to the growth of material science and polymer engineering.

Collaborations

Throughout his career, Henri Ulrich has collaborated with esteemed colleagues, including Benjamin W. Tucker and Reinhard H. Richter. These partnerships have fostered a creative environment that promotes the sharing of ideas and bolsters innovation, allowing for the effective development of cutting-edge chemical products.

Conclusion

Henri Ulrich’s work exemplifies the spirit of innovation within the polymer chemistry landscape. His extensive patent portfolio underscores his contributions to the field, providing foundational technologies for many modern applications. Through collaboration and persistent research, Ulrich continues to influence the advancement of chemical engineering and materials science.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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