Apti Inc.
31Patents
0Active
31Granted
40Portfolio score
Filing activity: Jan 10, 1985 → Apr 24, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6300914A | Fractal loop antenna | Electricity | 79 | Expired |
| US5883602A | Wideband flat short foci lens antenna | Electricity | 73 | Expired |
| US5218374A | Power beaming system with printer circuit radiating elements having resonating cavities | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5293176A | Folded cross grid dipole antenna element | Electricity | 41 | Expired |
| US5068669A | Power beaming system | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5416486A | Identification/security tag system employing electronic doppler shifting and/or rectenna structure | Physics | 32 | Expired |
| US5379103A | Method and apparatus for in situ detection of minute amounts of trace elements | Physics | 31 | Expired |
| US5950736A | Method and apparatus for improving drilling efficiency by application of a traveling wave to drilling fluid | Fixed Constructions | 25 | Expired |
| US5796372A | Folded cross grid dipole antenna | Electricity | 24 | Expired |
| US4817495A | Defense system for discriminating between objects in space | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4686605A | Method and apparatus for altering a region in the earth's atmosphere, ionosphere, and/or magnetosphere | Electricity | 21 | Expired |
| US6472950B1 | Broadband coupled-line power combiner/divider | Electricity | 21 | Expired |
| US6591731B2 | Method and apparatus for penetrating hard materials using a energetic slurry | Fixed Constructions | 17 | Expired |
| US5418544A | Stacked crossed grid dipole antenna array element | Electricity | 16 | Expired |
| US6529769B2 | Apparatus for performing hyperspectral endoscopy | Human Necessities | 16 | Expired |
| US6606932B2 | Method and apparatus for neutralization of mines and obstacles | Performing Operations; Transporting | 15 | Expired |
| US6466021B1 | Deep underground imaging utilizing resistivity regularization for magnetotelluric processing | Physics | 15 | Expired |
| US6733439B2 | Centering mechanism for probe | Human Necessities | 14 | Expired |
| US5041834A | Artificial ionospheric mirror composed of a plasma layer which can be tilted | Electricity | 13 | Expired |
| US5202689A | Lightweight focusing reflector for space | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4999637A | Creation of artificial ionization clouds above the earth | Electricity | 12 | Expired |
| US6363853B1 | Electrically initiated distributed igniter | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US6121853A | Broadband coupled-line power combiner/divider | Electricity | 9 | Expired |
| US5808349A | Magnetized photoconductive semiconductor switch | Electricity | 8 | Expired |
| US4712155A | Method and apparatus for creating an artificial electron cyclotron heating region of plasma | Electricity | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.