BIGPATENT, consisting of 1.3 million records of U.S. patent documents along with
human written abstractive summaries. Each US patent application is filed under a
Cooperative Patent Classification (CPC) code. There are nine such classification
categories: A (Human Necessities), B (Performing Operations; Transporting), C
(Chemistry; Metallurgy), D (Textiles; Paper), E (Fixed Constructions), F
(Mechanical Engineering; Lightning; Heating; Weapons; Blasting), G (Physics), H
(Electricity), and Y (General tagging of new or cross-sectional technology)

There are two features: - description: detailed description of patent. -
summary: Patent abastract.
