DH

Doyle G. Heyveld

Caterpillar: 3 patents #2,162 of 8,398Top 30%
📍 Peoria, IL: #577 of 1,769 inventorsTop 35%
🗺 Illinois: #26,653 of 84,256 inventorsTop 35%
Overall (All Time): #1,566,206 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7653516 System and method of establishing a reliability characteristic Prakash Babu, Robert H. Yonker 2010-01-26
5955706 Method and apparatus for calculating work cycle times Andrew O. Fonkalsrud, Eric A. Reiners 1999-09-21
5531122 Fatigue analysis and warning system Michael D. Chatham, Paul D. Fotsch, Edward P. Kelley, Walter E. Lohmann, Jr., David R. Roley +2 more 1996-07-02