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USPTO Patent Rankings Data through Dec 31, 2025
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Daniel Y. Chang — 2 Patents

3M: 2 patents #5,350 of 11,543Top 50%
Vadnais Heights, MN: #116 of 216 inventorsTop 55%
Minnesota: #24,068 of 52,454 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Daniel Y. Chang has been granted 2 US patents while listed as an inventor at 3M. The first was granted in 1996 and the most recent in January 1998. Daniel Y. Chang ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Daniel Y. Chang in Vadnais Heights, MN, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5705253 Video recording tapes suitable for high speed contact duplication Alvin M. Berg, Benedict L. Bezenek, Thomas M. Bohlsen, James G. Carlson, John Christopher Harvey +3 more 1998-01-06 $21,595,000
5510187 Magnetic recording medium whose magnetic layer incorporates nonhalogenated vinyl copolymer and specified polyurethane polymer Ramesh C. Kumar, Ravindra L. Arudi, James G. Carlson, John C. Haidos, Keith J. Modert +2 more 1996-04-23 $11,827,000