Location History:
- Saint Paul, MN (US) (1997)
- Brainerd, MN (US) (2002)
- Cottage Grove, MN (US) (1999 - 2003)
Company Filing History:
2 out of 7,865 
2 out of 14,059 
Years Active: 1997-2003
Title: The Innovative Contributions of David R Cram
Introduction
David R Cram is a notable inventor based in Cottage Grove, MN (US). He has made significant contributions to the field of adhesive tape technology, holding a total of 4 patents. His work has focused on developing methods and apparatuses that enhance the efficiency and functionality of pressure-sensitive adhesive tape.
Latest Patents
Among his latest patents are two innovative designs related to coreless rolls of pressure-sensitive adhesive tape. The first patent, titled "Tape Roll Liner/Tab, Application Apparatus and Method," describes a method and apparatus for forming coreless rolls. This invention utilizes a mandrel assembly with a specific circumferential tape supporting segment that is both compressible and sufficiently stiff to support the tape during winding. The design allows for easy axial removal of the wound tape roll from the shaft, ensuring that the innermost wrap of tape is masked by an adhesive liner. The liner is formed from a segment that was previously applied to the tape, creating an end tab on the outermost end of the coreless tape roll.
The second patent, "Coreless Adhesive Tape Winding Mandrel and Method," shares similar principles, focusing on the same innovative mandrel assembly. This invention also emphasizes the importance of the tape engaging surface portion, which is designed to facilitate the winding process while maintaining the integrity of the tape.
Career Highlights
David R Cram has had a distinguished career, working with prominent companies such as Minnesota Mining and Manufacturing Company and 3M Innovative Properties Company. His experience in these organizations has allowed him to refine his skills and contribute to advancements in adhesive technology.
Collaborations
Throughout his career, Cram has collaborated with notable colleagues, including Dee Lynn Johnson and Harvey D Ogren. These partnerships have fostered a creative environment that has led to innovative solutions in the adhesive tape industry.
Conclusion
David R Cram's contributions to adhesive tape technology through his patents and collaborations highlight his role as a significant inventor in this field. His innovative methods and apparatuses continue to influence the industry, showcasing the importance of creativity and collaboration in driving technological advancements.
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.