Robert Hart
25Patents
9h-index
17Co-inventors
72Inventor score
Filing activity: Mar 6, 1974 → May 11, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4092950A | Internal pipe coating apparatus | Emerging Cross-Sectional Technologies | 35 | Expired |
| US5422134A | Gelling agent | Chemistry; Metallurgy | 32 | Expired |
| US4371295A | System for spraying powder | Performing Operations; Transporting | 20 | Expired |
| USD432380S | Hammer head | General | 19 | Expired |
| US4340010A | Internal girth coating apparatus | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4563841A | Internal grit blast weld joint cleaner | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4376584A | Pattern printing including aligning masks and monitoring such alignment | Electricity | 13 | Expired |
| US4237817A | Apparatus for spraying powder circumferentially around a pipe joint | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4439379A | Method for the continuous manufacture of finely divided metals, particularly magnesium | Performing Operations; Transporting | 10 | Expired |
| US4351484A | Method of grinding magnesium ingots and such ingots | Performing Operations; Transporting | 9 | Expired |
| US4005677A | Apparatus for circumnavigating a dispenser about a pipe or the like | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7512466B2 | High-torque, low power reaction wheel array and method | Performing Operations; Transporting | 5 | Expired |
| US4374633A | Apparatus for the continuous manufacture of finely divided metals, particularly magnesium | Performing Operations; Transporting | 4 | Expired |
| US4038942A | System for spraying a powder circumferentially around a pipe | Performing Operations; Transporting | 3 | Expired |
| US6688931B2 | Flexible surf leash guide sleeve housing | Performing Operations; Transporting | 3 | Expired |
| US4308819A | System for spraying fluidized powder circumferentially around a pipe joint | Performing Operations; Transporting | 2 | Expired |
| US3972149A | End blaster for pipes | Performing Operations; Transporting | 1 | Expired |
| US12070725B2 | Vacuum manifold for filtration microscopy | Physics | 0 | Active |
| US11035795B2 | Methods for identification of particles in a fluid sample | Physics | 0 | Active |
| US11874228B2 | Methods for identification of particles in a fluid sample | Physics | 0 | Active |
| US12007548B2 | System and method for characterizing particulates in a fluid sample | Physics | 0 | Active |
| US11366047B2 | Vacuum manifold for filtration microscopy | Physics | 0 | Active |
| US11513333B2 | System and method for characterizing particulates in a fluid sample | Physics | 0 | Active |
| US10890514B2 | Vacuum manifold for filtration microscopy | Physics | 0 | Active |
| US11674874B2 | Vacuum manifold for filtration microscopy | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.