Company Filing History:
Years Active: 1989-1991
Title: Innovations by Robert M. Callahan
Introduction
Robert M. Callahan is a notable inventor based in Woodstock, NY (US). He has made significant contributions to the field of computer graphics, holding a total of 4 patents. His work has enhanced the functionality and usability of graphics systems, making him a valuable asset in the industry.
Latest Patents
One of his latest patents is titled "Application exit for potentially pickable primitives in a graphics system." This method allows local control to an application program during the drawing process when a 'pickable' primitive intersects the pick window. The state of the graphics workstation remains unaltered, enabling the application program to make 'picking' or visualization decisions at the moment the pick occurs. This capability enhances the productivity of users by allowing applications to resume execution seamlessly.
Another significant patent is the "Multistage clipping method." This method is designed for clipping two and three-dimensional graphic primitives for use in a computer graphics workstation. The first clipping stage removes all graphic primitives outside an arbitrary clipping volume, which is an enlargement of the desired viewing volume. This approach simplifies the transformation of geometric primitives that are partially visible to the viewer, providing a richer set of invariant geometric properties for rendering effects.
Career Highlights
Robert M. Callahan is currently employed at International Business Machines Corporation (IBM). His work at IBM has allowed him to collaborate with other talented individuals in the field, contributing to advancements in graphics technology.
Collaborations
Some of his notable coworkers include Bruce C. Hempel and Bob C. Liang. Their collaborative efforts have furthered the development of innovative solutions in computer graphics.
Conclusion
Robert M. Callahan's contributions to computer graphics through his patents and work at IBM have significantly impacted the industry. His innovative methods continue to enhance the functionality and usability of graphics systems, benefiting users worldwide.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.