Phil C. Yeh
85Patents
21h-index
52Co-inventors
91Inventor score
Filing activity: Aug 11, 1988 → May 7, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4941176A | Secure management of keys using control vectors | Electricity | 136 | Expired |
| US4918728A | Data cryptography operations using control vectors | Electricity | 127 | Expired |
| US6044388A | Pseudorandom number generator | Electricity | 97 | Expired |
| US6333983A | Method and apparatus for performing strong encryption or decryption data using special encryption functions | Electricity | 58 | Expired |
| US4924514A | Personal identification number processing using control vectors | Electricity | 45 | Expired |
| US8190664B2 | Employing a mask field of an instruction to encode a sign of a result of the instruction | Physics | 37 | Active |
| US5081677A | Crypotographic key version control facility | Physics | 35 | Expired |
| US6104810A | Pseudorandom number generator with backup and restoration capability | Electricity | 35 | Expired |
| US5214698A | Method and apparatus for validating entry of cryptographic keys | Electricity | 34 | Expired |
| US8560591B2 | Detection of potential need to use a larger data format in performing floating point operations | Physics | 34 | Active |
| US8051117B2 | Shift significand of decimal floating point data | Physics | 31 | Active |
| US4993069A | Secure key management using control vector translation | Electricity | 31 | Expired |
| US5404563A | Scheduling normally interchangeable facilities in multiprocessor computer systems | Physics | 30 | Expired |
| US8762438B2 | Composition of decimal floating point data | Physics | 29 | Active |
| US6189007A | Method and apparatus for conducting a high performance locking facility in a loosely coupled environment | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6185650A | High performance locking facility | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5177791A | Secure translation of usage-control values for cryptographic keys | Electricity | 24 | Expired |
| US6339824B1 | Method and apparatus for providing public key security control for a cryptographic processor | Electricity | 22 | Expired |
| US8060545B2 | Composition of decimal floating point data, and methods therefor | Physics | 22 | Active |
| US6108425A | Method and apparatus for controlling the configuration of a cryptographic processor | Electricity | 22 | Expired |
| US8051118B2 | Composition of decimal floating point data | Physics | 21 | Active |
| US8082282B2 | Decomposition of decimal floating point data, and methods therefor | Physics | 18 | Active |
| US9851946B2 | Round for reround mode in a decimal floating point instruction | Physics | 18 | Active |
| US7257718B2 | Cipher message assist instructions | Electricity | 17 | Expired |
| US8051119B2 | Decomposition of decimal floating point data | Physics | 17 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.