Yan P. Chang

📍 Williamsville, NY: #187 of 663 inventorsTop 30%

🗺 New York: #31,572 of 115,490 inventorsTop 30%

Overall (All Time): #1,301,150 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
4907410	Thermal energy from environmental fluids	—	1990-03-13
4541246	Limitless heat source power plants	—	1985-09-17
4516402	Limitless and limited heat sources power plants	—	1985-05-14
4433545	Thermal power plants and heat exchangers for use therewith	—	1984-02-28