Tony Lam
34Patents
12h-index
17Co-inventors
78Inventor score
Filing activity: Oct 17, 1995 → Apr 30, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6457530B1 | Wellhead production pumping tree | Fixed Constructions | 51 | Expired |
| US8965287B2 | Battery powered passive keyless entry system for premise entry | Physics | 37 | Active |
| US6595278B1 | Assembly for locking a polished rod in a pumping wellhead | Fixed Constructions | 35 | Expired |
| US5921276A | Piston-type check valve with diffuser | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6851478B2 | Y-body Christmas tree for use with coil tubing | Fixed Constructions | 27 | Expired |
| US5743332A | Integral wellhead assembly for pumping wells | Fixed Constructions | 20 | Expired |
| US7673674B2 | Polish rod clamping device | Fixed Constructions | 20 | Active |
| US6176466A | Composite pumping tree with integral shut-off valve | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7306201B2 | Gate valve with tongue and groove or bridging seal to annular seat elements | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US7562859B2 | Gate valve with tongue and groove or bridging seal to annular seat elements | Mechanical Engineering; Lighting; Heating | 16 | Active |
| US6260817A | Hydraulic blowout preventer assembly for production wellhead | Fixed Constructions | 13 | Expired |
| US5765813A | Wellhead production blowout preventer ram | Fixed Constructions | 13 | Expired |
| US7552765B2 | Wellhead blowout preventer with extended ram for sealing central bore | Fixed Constructions | 12 | Active |
| US7137610B2 | Wellhead production blowout preventer | Fixed Constructions | 12 | Expired |
| US7743824B2 | Method and apparatus for isolating a wellhead for fracturing | Fixed Constructions | 11 | Active |
| US8960276B2 | Wellhead seal device to seal casing | Fixed Constructions | 11 | Active |
| US5799730A | Wellhead casing hanger assembly | Fixed Constructions | 6 | Expired |
| US10113348B2 | Magnetic levitating door | Fixed Constructions | 5 | Active |
| US10316562B2 | Magnetic levitating door | Fixed Constructions | 5 | Active |
| US9639883B2 | Method and system of displaying information related to items offered for sale in a network-based marketplace | Physics | 3 | Active |
| US11021900B2 | Magnetic levitating door | Fixed Constructions | 3 | Active |
| US10577844B2 | Magnetic levitating door | Fixed Constructions | 3 | Active |
| US7929131B2 | Highly compact design for raman spectrometry | Physics | 3 | Active |
| US8700491B2 | Method and system of displaying information related to items offered for sale in a network-based marketplace | Physics | 3 | Active |
| US9243469B2 | Blowout preventer and rams | Fixed Constructions | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.