David Chan
20Patents
9h-index
7Co-inventors
68Inventor score
Filing activity: Mar 31, 1980 → Sep 21, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4468623A | Method and apparatus using pad carrying electrodes for electrically investigating a borehole | Physics | 135 | Expired |
| US5116273A | Self-extending portable panels | Human Necessities | 134 | Expired |
| US4567759A | Method and apparatus for producing an image log of a wall of a borehole penetrating an earth formation | Physics | 100 | Expired |
| US4545242A | Method and apparatus for measuring the depth of a tool in a borehole | Physics | 68 | Expired |
| USD565357S1 | Mixing bowl and stand | General | 52 | Expired |
| USD612197S1 | Lid for travel mug | General | 49 | Expired |
| US7086155B2 | Apparatus for coring into and cutting food items | Emerging Cross-Sectional Technologies | 31 | Expired |
| USD559634S1 | Container for fat separator | General | 17 | Expired |
| US4355357A | Dipmeter data processing technique | Physics | 15 | Expired |
| USD560444S1 | Fat separator cover | General | 7 | Expired |
| US7340953B2 | Liquid measuring vessel | Human Necessities | 7 | Active |
| US7431851B2 | Fat separator | Human Necessities | 5 | Active |
| USD622177S1 | Herb keeper | General | 3 | Expired |
| USD556507S1 | Cover for grater | General | 3 | Expired |
| US8070007B2 | Herb keeper with flexible projection | Human Necessities | 2 | Active |
| USD622629S1 | Herb keeper | General | 2 | Expired |
| USD560446S1 | Ice cream scoop | General | 1 | Expired |
| US10423761B2 | Reconciliation of data across distinct feature sets | Physics | 1 | Active |
| US8448887B2 | Food grater | Human Necessities | 1 | Active |
| USRE49865E1 | Reconciliation of data across distinct feature sets | General | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.