Inventor

ZHAO JIAJUN

US17 patents

⚠️ This page may combine multiple inventors who share the name “ZHAO JIAJUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ZHAO JIAJUN

AMAZON TECH INC

Re-establishing tracking of a user within a materials handling facility

Analyzing sensor data to identify events

Updating a position of a user within a materials handling facility

Analyzing sensor data to identify events

Associating carts and users in hybrid environments

Time-based check-in for mobile-device applications

Time-based check-in for mobile-device applications

Secure scannable code systems and methods

HALLIBURTON ENERGY SERVICES INC

Mapping wave slowness using multi-mode semblance processing techniques

Acoustic dispersion curve identification based on reciprocal condition number

Real-time tool mode waveform removal

Real-time cement bond logging based on correlation

Acoustic transducer with piezoelectric elements having different polarities

Methods to estimate formation slowness from multi-borehole modes and of a multi-mode dispersion wave and multi-mode dispersion estimation systems

Methods to estimate formation shear wave slowness from multi-firings of different types of acoustic sources and multi-mode dispersion estimation systems

GOWELL INT LLC

Method and system of evaluating cement bonds through tubing

UNIV KING ABDULLAH SCI & TECH

Audio speaker and method of producing an audio speaker