Not me, but I've used it in relation to work: The World Intellectual Property Office has IPCCAT which is an AI patent topic classifier that seems to work very e

Not me, but I've used it in relation to work: The World Intellectual Property Office has IPCCAT which is an AI patent topic classifier that seems to work very effectively. https://wipo.int/ipccat https://wipo.int/ipccat Put a description in the text field, hit search and you get back IPC (International Patent Classification) terms.