This inventor holds 3 USPTO granted patents. Top assignees: Institute Po Metaloznanie I Technologia Na Metalite, Institut Po Metaloznanie I Technologia Na Metalite. Active years: 1976-1982.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 21 
1 out of 4 Years Active: 1976-1982
Title: Innovations of Stefan Georgiev Semerdjiev
Introduction
Stefan Georgiev Semerdjiev is a notable inventor based in Sofia, Bulgaria. He has made significant contributions to the field of thermoplastic injection molding, holding a total of three patents. His work reflects a deep understanding of the complexities involved in molding processes and the innovative solutions he has developed.
Latest Patents
One of his latest patents is a distributing device for machines for injection molding of thermoplastic. This molding apparatus features a slider that is slidable in an inclined channel, which opens to a mold cavity on one side while allowing communication with a plasticating cylinder and a further cylinder equipped with a plunger or piston on the opposite side. The design includes a U-shaped passage that interconnects both passages, ensuring efficient operation by blocking the mold passage while connecting to the accumulating cylinder. Another significant patent is a method of injection molding a thermoplastic article with a cellular structure. This method involves temporarily accumulating previously foamed material behind unfoamed thermoplastic, allowing both materials to be forced into the mold cavity for expansion.
Career Highlights
Stefan has worked at the Institute for Metal Science and Technology and the Institute for Metal Science and Technology, where he has honed his skills and contributed to various projects. His experience in these institutions has played a crucial role in his development as an inventor.
Collaborations
Throughout his career, Stefan has collaborated with notable colleagues such as Ivan Dimov Nikolov and Nikolay Tihomirov Popov. These collaborations have likely enriched his work and led to further innovations in the field.
Conclusion
Stefan Georgiev Semerdjiev's contributions to thermoplastic injection molding demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to advancing the industry and improving manufacturing processes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile