John Ratzel
9Patents
5h-index
10Co-inventors
56Inventor score
Filing activity: Oct 2, 1997 → Aug 12, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7483581B2 | Apparatus and method for encoding digital image data in a lossless manner | Electricity | 35 | Expired |
| US6985589B2 | Apparatus and method for encoding and storage of digital image and audio signals | Electricity | 34 | Expired |
| US8023750B2 | Apparatus and method for encoding digital image data in a lossless manner | Electricity | 16 | Active |
| US8270738B2 | Apparatus and method for encoding digital image data in a lossless manner | Electricity | 11 | Active |
| US6043781A | Low insertion loss connection of an antenna to a mobile radio with retractable swiveling antenna feature | Electricity | 10 | Expired |
| US5943623A | Integrated control and signal processing in a cellular telephone | Physics | 3 | Expired |
| US8098943B2 | Apparatus and method for encoding digital image data in a lossless manner | Electricity | 2 | Active |
| US7596277B2 | Apparatus and method for detecting error in a digital image | Electricity | 2 | Expired |
| US8813137B2 | Apparatus and method for decoding digital image and audio signals | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.