Ralph A. Chappa
73Patents
24h-index
37Co-inventors
88Inventor score
Filing activity: Jun 10, 1998 → Jan 14, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6214901A | Bioactive agent release coating | Human Necessities | 340 | Expired |
| US6465178B2 | Target molecule attachment to surfaces | Chemistry; Metallurgy | 292 | Expired |
| US6344035B1 | Bioactive agent release coating | Human Necessities | 290 | Expired |
| US6254634A | Coating compositions | Emerging Cross-Sectional Technologies | 126 | Expired |
| US6890583B2 | Bioactive agent release coating | Human Necessities | 111 | Expired |
| US7008667B2 | Bioactive agent release coating | Human Necessities | 110 | Expired |
| US7348055B2 | Reagent and method for providing coatings on surfaces | Emerging Cross-Sectional Technologies | 89 | Expired |
| US6562136B1 | Coating apparatus and method | Performing Operations; Transporting | 87 | Expired |
| US7709049B2 | Methods, devices, and coatings for controlled active agent release | Human Necessities | 67 | Active |
| USRE40722E1 | Method and apparatus for coating of substrates | General | 65 | Active |
| US7736689B2 | Reagent and method for providing coatings on surfaces | Emerging Cross-Sectional Technologies | 63 | Active |
| US7192484B2 | Advanced coating apparatus and method | Performing Operations; Transporting | 59 | Expired |
| US7097850B2 | Bioactive agent release coating and controlled humidity method | Human Necessities | 57 | Expired |
| US8039524B2 | Reagent and method for providing coatings on surfaces | Emerging Cross-Sectional Technologies | 57 | Active |
| US7442402B2 | Bioactive agent release coating | Human Necessities | 43 | Expired |
| US7958840B2 | Method and apparatus for coating of substrates | Performing Operations; Transporting | 43 | Active |
| US6669994B2 | Water-soluble coating agents bearing initiator groups | Emerging Cross-Sectional Technologies | 42 | Expired |
| US7824704B2 | Controlled release bioactive agent delivery device | Human Necessities | 42 | Active |
| US6254921A | Coating process and apparatus | Performing Operations; Transporting | 38 | Expired |
| US7087658B2 | Water-soluble coating agents bearing initiator groups | Emerging Cross-Sectional Technologies | 37 | Expired |
| US7125577B2 | Method and apparatus for coating of substrates | Emerging Cross-Sectional Technologies | 33 | Expired |
| US6406754B2 | Coating process and apparatus | Performing Operations; Transporting | 32 | Expired |
| US8021680B2 | Controlled release bioactive agent delivery device | Human Necessities | 27 | Expired |
| US6709712B2 | Coating method | Performing Operations; Transporting | 27 | Expired |
| US7669548B2 | Method and apparatus for coating of substrates | Emerging Cross-Sectional Technologies | 24 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.