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Daniel B. Steffen — 2 Patents

HCHoffman Controls: 2 patents #4 of 4Top 100%
Plano, TX: #2,346 of 4,842 inventorsTop 50%
Texas: #52,941 of 125,132 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Daniel B. Steffen has been granted 2 US patents while listed as an inventor at Hoffman Controls. The first was granted in 2000 and the most recent in February 2004. Daniel B. Steffen ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Daniel B. Steffen in Plano, TX, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6684944 Variable speed fan motor control for forced air heating/cooling system Howard P. Byrnes 2004-02-03
6070660 Variable speed fan motor control for forced air heating/cooling system Howard P. Byrnes 2000-06-06

Frequent Collaborators

Howard P. Byrnes2 shared

Nearby-Ranked Inventors

Leonard Mattheis2
Yiqi SHI2
Roberto DiCecco2
Haoneng Xu2
Emily Chew2
So Young Bae2
Julian Alexander Georgi2
Yoshihiro Asahara2
Assaf Ariel2