US Trademark Classification US01 Chemicals 酮戊二酸（001-2278） Class 01 酮戊二酸 001-2278 Chinese 酮戊二酸 English Ketoglutaric acid Term ID 001-2278 Class 01 Type Goods Status Active · added, not since modified (A) Effective date 2021-04-01 Version 11-2021