Inventor · San Francisco, CA, US

Chad Walters

20Patents
10h-index
38Co-inventors
75Inventor score

Filing activity: Feb 29, 1996 → Oct 1, 2019

Most-cited inventions

PatentTitleAreaCited byStatus
US7827523B2 Query serving infrastructure providing flexible and expandable support and compiling instructions Physics 342 Active
US5768593A Dynamic cross-compilation system and method Physics 139 Expired
US7594258B2 Access control systems and methods using visibility tokens with automatic propagation Electricity 101 Active
US5699539A Virtual memory management system and method using data compression Physics 78 Expired
US7634466B2 Realtime indexing and search in large, rapidly changing document collections Emerging Cross-Sectional Technologies 55 Active
US5617552A Lossless data compression system and method Physics 38 Expired
US8229730B2 Indexing role hierarchies for words in a search index Physics 31 Active
US8713024B2 Efficient forward ranking in a search engine Physics 13 Active
US7984032B2 Iterators for applying term occurrence-level constraints in natural language searching Physics 13 Active
US9424351B2 Hybrid-distribution model for search engine indexes Physics 12 Active
US8620907B2 Matching funnel for large document index Physics 8 Active
US8316036B2 Checkpointing iterators during search Physics 6 Active
US8280721B2 Efficiently representing word sense probabilities Physics 4 Active
US8738598B2 Checkpointing iterators during search Physics 4 Active
US8639708B2 Fact-based indexing for natural language search Physics 3 Active
US8229970B2 Efficient storage and retrieval of posting lists Physics 3 Active
US8959077B2 Multi-layer search-engine index Physics 2 Active
US10437892B2 Efficient forward ranking in a search engine Physics 2 Active
US9959347B2 Multi-layer search-engine index Physics 0 Active
US11803596B2 Efficient forward ranking in a search engine Physics 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.