Location History:
- Huntsville, AL (US) (1996 - 1998)
- Gurley, AL (US) (2002 - 2003)
Company Filing History:
3 out of 3,430 
2 out of 2,450 
1 out of 1 
Years Active: 1996-2003
Title: The Innovative Contributions of Donald L Roxby
Introduction
Donald L Roxby is a notable inventor based in Huntsville, Alabama, with a remarkable portfolio of eight patents. His work primarily focuses on advanced methods for marking and reading identification symbols, showcasing his expertise in the field of technology and engineering.
Latest Patents
Among his latest patents is the "Direct marking of parts with encoded symbology method, apparatus and symbology." This invention describes an automated method for creating impressions of machine-readable encoded symbology using thermojet type solid object printing technology. The process involves electronically transmitting a software file containing a part identification symbol representation in Computer Assisted Drawing (CAD) software format to a ThermoJet™ type solid object printer. Tiny droplets of a wax-like material are deposited in successive layers to form a three-dimensional pattern insert containing representations of the encoded symbology, which is then combined with a pattern replica of a part to be encoded. A casting mold is formed from this combined pattern, resulting in a machine-readable 2D Data Matrix type encoded, directly marked part.
Another significant patent is the "Method and apparatus for reading two-dimensional identification symbols using radar techniques." This invention provides a method and apparatus for sensing two-dimensional identification marks on or embedded within a substrate. Micropower impulse radar is utilized to transmit a high risetime, short duration pulse to a focused radar target area of the substrate. The method includes listening for radar echoes returned from the identification marks during a short listening period window after the transmission of the radar pulse. If radar echoes are detected, an image processing step is carried out. If no echoes are detected, further high risetime pulses are transmitted until echoes are found, allowing for the processing of data to produce an image of the identification marks.
Career Highlights
Donald L Roxby has had a distinguished career, working with prominent organizations such as Rockwell International Corporation and NASA. His contributions to these institutions have significantly advanced the fields of engineering and technology.
Collaborations
Throughout his career, Roxby has collaborated with notable individuals, including Harry F Schramm, Jr and Lisa M Johnson. These partnerships have fostered innovation and development in his projects.
Conclusion
Donald L Roxby stands out as a significant figure in the realm of invention, with his patents reflecting a commitment to advancing technology. His innovative methods for marking and reading identification symbols