RH

Roger C. Helgeson

TI Technicon Instruments: 1 patents #9 of 33Top 30%
University of California: 1 patents #21 of 164Top 15%
📍 Joshua Tree, CA: #1 of 1 inventorsTop 100%
🗺 California: #2,144 of 10,592 inventorsTop 25%
Overall (1989): #63,058 of 140,708Top 45%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4859606 Method for detecting cations in a test sample utilizing chromogenic cryptahemispherands Donald J. Cram, Eddy Chapoteau, Bronislaw P. Czech, Carl R. Gebauer, Anand Kumar +1 more 1989-08-22