Packaging is one of the most important methods of keeping the quality of food products for storage, transportation and end-use. The price of materials employed for packaging food has traditionally been high and used t...Packaging is one of the most important methods of keeping the quality of food products for storage, transportation and end-use. The price of materials employed for packaging food has traditionally been high and used to be more expensive than the food itself. Technological innovations made possible to produce packaging materials cheaply. One of these processes is known as co-extrusion. This technique makes a film with two or more layers with different plastics not laminating the layers together with an adhesive, eliminating the use of solvents and producing a film in just one step instead multiple steps. In this background, our paper relates to the evolution on packaging for foods by using patenting documents. A search for patent documents was performed on free patent databases using keywords and International Patent Classification （IPC） codes related to this technology. As results： （a） 17% of the 21,472 documents found are focused on multilayer packaging for food; （b） 12 countries hold more than 90% of patents （38% Japan; 23% The United States of America; 7% Canada and 6% Germany）; and, （c） two peaks were perceived in the period of 1992-1994 and 2003, and matches, respectively, the Persian Gulf （1990-1991） and Iraq Wars （2003-invasion of Iraq）, so the historical tendency is confirmed： ＂wars also generate scientific and technological innovations＂.展开更多
GB/T 7714-2005 Rules for description of bibliographic reference is specifically for writers and editors to edit bibliographic references. Legal documents, standard documents and patent documents are considered special...GB/T 7714-2005 Rules for description of bibliographic reference is specifically for writers and editors to edit bibliographic references. Legal documents, standard documents and patent documents are considered special. GB/T 7714-2005 provides that description of such literature in bibliographic references should stress the key points and simplify the content.展开更多
Engineering and research teams often develop new products and technologies by referring to inventions described in patent databases. Efficient patent analysis builds R＆D knowledge, reduces new product development tim...Engineering and research teams often develop new products and technologies by referring to inventions described in patent databases. Efficient patent analysis builds R＆D knowledge, reduces new product development time, increases market success, and reduces potential patent infringement. Thus, it is beneficial to automatically and systematically extract information from patent documents in order to improve knowledge sharing and collaboration among R＆D team members. In this research, patents are summarized using a combined ontology based and TF-IDF concept clustering approach. The ontology captures the general knowledge and core meaning of patents in a given domain. Then, the proposed methodology extracts, clusters, and integrates the content of a patent to derive a summary and a cluster tree diagram of key terms. Patents from the International Patent Classification （IPC） codes B25C, B25D, B25F （categories for power hand tools） and B24B, C09G and H011 （categories for chemical mechanical polishing） are used as case studies to evaluate the compression ratio, retention ratio, and classification accuracy of the summarization results. The evaluation uses statistics to represent the summary generation and its compression ratio, the ontology based keyword extraction retention ratio, and the summary classification accuracy. The results show that the ontology based approach yields about the same compression ratio as previous non-ontology based research but yields on average an 11% improvement for the retention ratio and a 14% improvement for classification accuracy.展开更多
文摘Packaging is one of the most important methods of keeping the quality of food products for storage, transportation and end-use. The price of materials employed for packaging food has traditionally been high and used to be more expensive than the food itself. Technological innovations made possible to produce packaging materials cheaply. One of these processes is known as co-extrusion. This technique makes a film with two or more layers with different plastics not laminating the layers together with an adhesive, eliminating the use of solvents and producing a film in just one step instead multiple steps. In this background, our paper relates to the evolution on packaging for foods by using patenting documents. A search for patent documents was performed on free patent databases using keywords and International Patent Classification （IPC） codes related to this technology. As results： （a） 17% of the 21,472 documents found are focused on multilayer packaging for food; （b） 12 countries hold more than 90% of patents （38% Japan; 23% The United States of America; 7% Canada and 6% Germany）; and, （c） two peaks were perceived in the period of 1992-1994 and 2003, and matches, respectively, the Persian Gulf （1990-1991） and Iraq Wars （2003-invasion of Iraq）, so the historical tendency is confirmed： ＂wars also generate scientific and technological innovations＂.
文摘GB/T 7714-2005 Rules for description of bibliographic reference is specifically for writers and editors to edit bibliographic references. Legal documents, standard documents and patent documents are considered special. GB/T 7714-2005 provides that description of such literature in bibliographic references should stress the key points and simplify the content.
基金supported by National Science Council research grants
文摘Engineering and research teams often develop new products and technologies by referring to inventions described in patent databases. Efficient patent analysis builds R＆D knowledge, reduces new product development time, increases market success, and reduces potential patent infringement. Thus, it is beneficial to automatically and systematically extract information from patent documents in order to improve knowledge sharing and collaboration among R＆D team members. In this research, patents are summarized using a combined ontology based and TF-IDF concept clustering approach. The ontology captures the general knowledge and core meaning of patents in a given domain. Then, the proposed methodology extracts, clusters, and integrates the content of a patent to derive a summary and a cluster tree diagram of key terms. Patents from the International Patent Classification （IPC） codes B25C, B25D, B25F （categories for power hand tools） and B24B, C09G and H011 （categories for chemical mechanical polishing） are used as case studies to evaluate the compression ratio, retention ratio, and classification accuracy of the summarization results. The evaluation uses statistics to represent the summary generation and its compression ratio, the ontology based keyword extraction retention ratio, and the summary classification accuracy. The results show that the ontology based approach yields about the same compression ratio as previous non-ontology based research but yields on average an 11% improvement for the retention ratio and a 14% improvement for classification accuracy.
