David Xu
5Patents
3h-index
10Co-inventors
50Inventor score
Filing activity: Mar 30, 1995 → May 7, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5612478A | Process for preparing 1,1'-[1,4-phenylenebis-(methylene)]-bis-1,4,8,11-tetraazacyclotetradecan e | Chemistry; Metallurgy | 19 | Expired |
| US5756728A | Process for preparing 1,1'-1,4-phenylenebis-(methylene)!-bis-1,4,8,11-tetraazacyclotetradecan e | Chemistry; Metallurgy | 6 | Expired |
| US5801281A | Process for preparing 1,1'- (1,4- phenylenebis (methlene)-Bis 1,4,8,11-tetraazacyclotetradecane | Chemistry; Metallurgy | 6 | Expired |
| US7906677B2 | Process for phenylacetic acid derivatives | Chemistry; Metallurgy | 0 | Active |
| US6545148B2 | Process for preparing certain substituted caprolactams | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.