G06F 7/508
Using carry look-ahead circuits
Official title: using carry look-ahead circuits
G06F7/508 (Using carry look-ahead circuits) appears on 235 US grants and 91 published applications in this corpus.
Search patents in G06F- Granted patents
- 235
- Published applications
- 91
- Assignees
- 105
- Inventors
- 333
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 9 | 0 |
| 1998 | 6 | 0 |
| 1999 | 10 | 0 |
| 2000 | 11 | 0 |
| 2001 | 22 | 2 |
| 2002 | 9 | 7 |
| 2003 | 13 | 14 |
| 2004 | 10 | 13 |
| 2005 | 4 | 4 |
| 2006 | 11 | 6 |
| 2007 | 7 | 2 |
| 2008 | 8 | 4 |
| 2009 | 3 | 5 |
| 2010 | 4 | 0 |
| 2011 | 2 | 2 |
| 2012 | 2 | 1 |
| 2013 | 4 | 0 |
| 2014 | 0 | 2 |
| 2015 | 3 | 1 |
| 2016 | 3 | 2 |
| 2017 | 3 | 3 |
| 2018 | 4 | 0 |
| 2019 | 1 | 3 |
| 2020 | 2 | 1 |
| 2021 | 0 | 2 |
| 2022 | 0 | 1 |
| 2023 | 3 | 8 |
| 2024 | 3 | 3 |
| 2025 | 4 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Asynchronous full-adder with majority or minority gates to generate an enable or an acknowledgement17 Feb 2026US 12,554,462 B1Kepler Computing Inc.
- Asynchronous full-adder with majority or minority gates to generate sum true output13 Jan 2026US 12,524,205 B1Kepler Computing Inc.
- Asynchronous carry-ripple adder with majority or minority gates25 Nov 2025US 12,481,481 B2Kepler Computing Inc.
- Asynchronous full-adder with majority or minority gates to generate carry-out true output9 Sep 2025US 12,411,657 B1Kepler Computing Inc.
- Asynchronous full-adder with majority or minority gates to generate carry-out false output2 Sep 2025US 12,405,768 B1Kepler Computing Inc.
- High-speed selective carry propagate adder13 Aug 2026US 2026/0236721 A1Indian Institute of Technology Madras (Iit Madras)
- Signed extension carry-look-ahead for accumulator with bit width difference27 Nov 2025US 2025/0362872 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Logic gate complexity28 Aug 2025US 2025/0272464 A1Arm Limited
- Logic gate complexity28 Aug 2025US 2025/0274127 A1Arm Limited
- Secure adder having carry-safe adder to verify result of secure addition operation performed by secure carry-lookahead adder31 Jul 2025US 2025/0244952 A1Nuvoton Technology Corporation
Most cited
By later US patents
- Method and apparatus for designing circuits for wave pipelining258US 5,796,624 AThe Research Foundation of State University of New York · 1998
- Parallel shift and add circuit and method123US 5,390,135 AHewlett-Packard Company · 1995
- Performance of an operation on whole word operands and on operations in parallel on sub-word operands in a single processor73US 5,636,351 AHewlett-Packard Company · 1997
- Method and a circuit using an associative calculator for calculating a sequence of non-associative operations65US 7,991,817 B2California Institute of Technology · 2011
- Parallel digital arithmetic device having a variable number of independent arithmetic zones of variable width and location55US 3,987,291 AInternational Business Machines Corporation · 1976