Inventor

HECKELMAN JAMES D

US11 patents

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

HECKELMAN JAMES D

2 patents

US4319659AMar 16, 1982

Compartment locking means and thermal actuator therefor

HECKELMAN JAMES D17 citations64

US4318005AMar 2, 1982

Digital anti-theft locking circuit

HECKELMAN JAMES D3 citations58

OHIO RES ENERGY INC

2 patents

US3999076ADec 21, 1976

Blasting machine

OHIO RES ENERGY INC2 citations59

US3959670AMay 25, 1976

Blasting machine

OHIO RES ENERGY INC5 citations59

FORESIGHT TECHNOLOGIES INC

1 patent

US6307920B1Oct 23, 2001

Microprocessor controlled dispatcher activated response identification system with telephone and radio frequency interface

FORESIGHT TECHNOLOGIES INC92 citations93

WALKER RICHARD E

1 patent

US4455941AJun 26, 1984

Detonating cord and continuity verification system

WALKER RICHARD E36 citations90

RES ENERGY OF OHIO INC

1 patent

US4403143ASep 6, 1983

Detonating cord and continuity verification system

RES ENERGY OF OHIO INC36 citations88

DAN MAR

1 patent

US4152703AMay 1, 1979

Homing device

DAN MAR14 citations67

DAN MAR CO INC

1 patent

US4188621AFeb 12, 1980

Alarm system

DAN MAR CO INC8 citations66

AUSTIN POWDER CO

1 patent

US10006281B2Jun 26, 2018

Calibration of molded piezoelectric longitudinal charge coefficient of a pressure sensor for blasting operation

AUSTIN POWDER CO1 citations48

AUSTIN STAR DETONATOR CO

1 patent

US10359264B2Jul 23, 2019

Electronic detonator, electronic ignition module (EIM) and firing circuit for enhanced blasting safety

AUSTIN STAR DETONATOR CO0 citations41