David Ramsden
37Patents
8h-index
16Co-inventors
72Inventor score
Filing activity: Feb 27, 1992 → Oct 5, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6940071B2 | Gamma-ray spectrometry | Physics | 53 | Expired |
| US5216702A | Nonintrusive speech level and dynamic noise measurements | Physics | 52 | Expired |
| US8319188B2 | Gamma-ray detector | Physics | 21 | Active |
| US5875230A | Interactive measurement system and method for telecommunication networks | Electricity | 21 | Expired |
| US7202478B2 | Gamma-ray spectrometry | Physics | 14 | Expired |
| US7504635B2 | Gamma-ray camera system | Human Necessities | 13 | Expired |
| US5793864A | Nonintrusive measurement of echo power and echo path delay present on a transmission path | Electricity | 10 | Expired |
| US6002762A | Method and apparatus for making nonintrusive noise and speech level measurements on voice calls | Electricity | 10 | Expired |
| US7547887B2 | Gamma ray spectrometers | Physics | 7 | Expired |
| US8089992B2 | Systems and methods to measure the performance of a de-jitter buffer | Electricity | 5 | Active |
| US7050400B1 | End-to-end connection packet loss detection algorithm using power level deviation | Electricity | 4 | Expired |
| US8384016B2 | Stabilization in gamma-ray spectometry | Physics | 4 | Active |
| US9046613B2 | Radiation detector | Physics | 3 | Active |
| US9268044B2 | Neutron spectrometer | Physics | 3 | Active |
| US7516033B2 | Method and apparatus for identifying echo sources in a communication path | Electricity | 3 | Active |
| US9535177B2 | Gamma-ray spectrometry | Physics | 3 | Active |
| US7683336B2 | Spectrometer with plastic scintillator provided with a specular reflector | Physics | 3 | Active |
| US10310102B2 | Gamma-ray detector | Physics | 2 | Active |
| US9465119B2 | Gamma-ray spectrometer | Physics | 2 | Active |
| US10126442B2 | Spherical neutron detector | Physics | 2 | Active |
| US7602732B1 | End-to-end connection packet loss detection algorithm using power level deviation | Electricity | 2 | Active |
| US10429523B2 | Apparatus and methods for gamma ray detection | Physics | 2 | Active |
| US8374993B2 | Radioactive isotope identification | Physics | 2 | Active |
| US11009616B2 | Neutron detection | Physics | 1 | Active |
| US8391126B2 | Method and apparatus for providing echo cancellation in a network | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.