Eric Gratz has been granted 8 US patents while listed as an inventor at Worcester Polytechnic Institute . The first was granted in 2019 and the most recent in November 2025. Eric Gratz ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Eric Gratz in Worcester, MA, US.
Patents per Year Patents granted per year, 2019 to 2024 Bar chart with a peak of 4 patents in 2024. peak 4 2019: 1 patents 2019 2021: 1 patents 2021 2023: 1 patents 2023 2024: 4 patents 2024
Issued Patents All Time
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Showing 1–8 of 8 patents
Patent # Title Co-Inventors Date
12463266 Graphite recovery in recycled batteries Zhangfeng Zheng 2025-11-04
12071677 Lithium iron phosphate (LFP) battery recycling Kee-Chan Kim 2024-08-27
12074302 Charge material for recycled lithium-ion batteries Yan Wang , Qina Sa , Zhangfeng Zheng , Joseph Heelan , Kee-Chan Kim 2024-08-27
12040463 Nickel-rich battery recycling Kee-Chan Kim 2024-07-16
11955613 Charge material for recycled lithium-ion batteries Yan Wang , Qina Sa , Zhangfeng Zheng , Joseph Heelan , Kee-Chan Kim 2024-04-09
11827998 Facile etching for single crystal cathode materials Yan Wang , Xiaotu Ma , Jinzhao Fu , Panawan Vanaphuti 2023-11-28
11127992 Charge material for recycled lithium-ion batteries Yan Wang , Qina Sa , Zhangfeng Zheng , Joseph Heelan 2021-09-21
10522884 Method and apparatus for recycling lithium-ion batteries Yan Wang , Qina Sa , Zhangfeng Zheng , Joseph Heelan 2019-12-31