David Halpin
6Patents
4h-index
10Co-inventors
50Inventor score
Filing activity: Oct 27, 2000 → Nov 24, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7467351B1 | Layered master pages | Physics | 26 | Expired |
| US6771276B1 | Two-dimensional drawing environment utilizing perspective grids | Physics | 25 | Expired |
| US7844551B1 | Secure, anonymous authentication for electronic purchasing with dynamic determination of payment pricing and terms and cross vendor transaction resolution | Physics | 9 | Active |
| US8020092B1 | Layered master pages | Physics | 5 | Active |
| US9639511B2 | Systems and methods for editing a file in a non-native application using an application engine | Physics | 4 | Active |
| US8700994B1 | Layered master pages | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.