John N. Gregg
42Patents
17h-index
28Co-inventors
81Inventor score
Filing activity: Apr 28, 1993 → May 31, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8444120B2 | Method and apparatus to help promote contact of gas with vaporized material | Emerging Cross-Sectional Technologies | 529 | Active |
| US8821640B2 | Solid precursor-based delivery of fluid utilizing controlled solids morphology | Chemistry; Metallurgy | 514 | Active |
| US6921062B2 | Vaporizer delivery ampoule | Emerging Cross-Sectional Technologies | 124 | Expired |
| US5590695A | Manifold systems for high purity chemical delivery systems | Emerging Cross-Sectional Technologies | 72 | Expired |
| US5465766A | Chemical refill system for high purity chemicals | Emerging Cross-Sectional Technologies | 57 | Expired |
| US5562132A | Bulk containers for high purity chemical delivery systems | Emerging Cross-Sectional Technologies | 55 | Expired |
| US5711354A | Level control systems for high purity chemical delivery systems | Emerging Cross-Sectional Technologies | 51 | Expired |
| US5607002A | Chemical refill system for high purity chemicals | Emerging Cross-Sectional Technologies | 46 | Expired |
| US7300038B2 | Method and apparatus to help promote contact of gas with vaporized material | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6296025A | Chemical delivery system having purge system utilizing multiple purge techniques | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5878793A | Refillable ampule and method re same | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US6199599A | Chemical delivery system having purge system utilizing multiple purge techniques | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6520218B1 | Container chemical guard | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US7556244B2 | Method and apparatus to help promote contact of gas with vaporized material | Emerging Cross-Sectional Technologies | 19 | Active |
| US6457494B1 | Chemical delivery system having purge system utilizing multiple purge techniques | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7487956B2 | Method and apparatus to help promote contact of gas with vaporized material | Emerging Cross-Sectional Technologies | 19 | Active |
| US6029717A | High aspect ratio containers for ultrahigh purity chemicals | Physics | 17 | Expired |
| US7828274B2 | Method and apparatus to help promote contact of gas with vaporized material | Emerging Cross-Sectional Technologies | 16 | Active |
| US6629627B1 | Level control systems for high purity chemical delivery systems | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6192919A | Chemical delivery and containment system employing mobile shipping crate | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6637475B2 | Bulk chemical delivery system | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US8128073B2 | Method and apparatus to help promote contact of gas with vaporized material | Emerging Cross-Sectional Technologies | 14 | Active |
| US6029718A | Chemical delivery system employing containment crate | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US5950693A | Bulk chemical delivery system | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6056024A | Bulk chemical delivery system | Emerging Cross-Sectional Technologies | 13 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.