David P. Helm
17Patents
8h-index
19Co-inventors
69Inventor score
Filing activity: May 23, 1978 → Sep 21, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4156292A | Display carrying and protective helmet | Physics | 52 | Expired |
| US5719871A | Method and apparatus for performing diversity voting in a communication system | Electricity | 40 | Expired |
| US5790605A | Method for determining voting windows in a diversity repeater | Electricity | 16 | Expired |
| US7133371B2 | Methods for achieving reliable joins in a multicast IP network | Electricity | 13 | Expired |
| US6847827B2 | Method for managing bandwidth in a packet-based communication system using call unit reservations | Electricity | 11 | Expired |
| US6321086A | Comparator and methods for voting therewith | Electricity | 8 | Expired |
| US5483671A | Method of determining transmission time to transmit an information packet to a remote buffer | Electricity | 8 | Expired |
| US5678193A | Determination of an initial launch time in a simulcast communication system | Electricity | 8 | Expired |
| US5485462A | Method of facilitating an audio source change in a digital radio communication system | Physics | 6 | Expired |
| US6999465B2 | Methods for reliably sending IP multicast packets to multiple endpoints of a local area network | Electricity | 5 | Expired |
| US4249791A | Optical scanning system using folding mirrors and with stabilization | Physics | 4 | Expired |
| US6035206A | Method and apparatus for transmitting multiple communication messages on a communication resource | Electricity | 4 | Expired |
| US5774812A | Method of voting multiple digital frames simultaneously | Electricity | 4 | Expired |
| US9521514B2 | Method and apparatus for controlling network access in a wireless communication system | Electricity | 2 | Active |
| US9462447B2 | Methods and systems for allocating resources from component carriers to a public-safety mobile radio | Electricity | 1 | Active |
| US6052601A | Method and apparatus for using pace groups in a comparator | Electricity | 0 | Expired |
| US10819852B2 | Device, system and method for communicating between devices using two protocols | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.