G06F 9/52
Program synchronisation
Official title: Program synchronisation; Mutual exclusion, e.g. by means of semaphores
G06F9/52 (Program synchronisation) appears on 5,820 US grants and 5,641 published applications in this corpus.
Search patents in G06F- Granted patents
- 5,820
- Published applications
- 5,641
- Assignees
- 1,071
- Inventors
- 10,935
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 7 | 0 |
| 1983 | 11 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 10 | 0 |
| 1987 | 7 | 0 |
| 1988 | 13 | 0 |
| 1989 | 7 | 0 |
| 1990 | 15 | 0 |
| 1991 | 18 | 0 |
| 1992 | 25 | 0 |
| 1993 | 36 | 0 |
| 1994 | 58 | 0 |
| 1995 | 34 | 0 |
| 1996 | 39 | 0 |
| 1997 | 50 | 0 |
| 1998 | 80 | 0 |
| 1999 | 94 | 0 |
| 2000 | 93 | 0 |
| 2001 | 80 | 15 |
| 2002 | 67 | 85 |
| 2003 | 70 | 128 |
| 2004 | 110 | 164 |
| 2005 | 82 | 138 |
| 2006 | 133 | 178 |
| 2007 | 103 | 187 |
| 2008 | 130 | 264 |
| 2009 | 133 | 185 |
| 2010 | 200 | 204 |
| 2011 | 178 | 217 |
| 2012 | 240 | 240 |
| 2013 | 264 | 246 |
| 2014 | 277 | 268 |
| 2015 | 266 | 274 |
| 2016 | 355 | 278 |
| 2017 | 293 | 265 |
| 2018 | 239 | 281 |
| 2019 | 289 | 274 |
| 2020 | 323 | 304 |
| 2021 | 290 | 296 |
| 2022 | 279 | 259 |
| 2023 | 222 | 265 |
| 2024 | 235 | 238 |
| 2025 | 200 | 204 |
| 2026 | 139 | 184 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Bandwidth controlled data synchronization for image and vision processor6 Oct 2026US 12,754,771 B2Texas Instruments Incorporated
- Key server and storage deadlock control6 Oct 2026US 12,754,780 B2International Business Machines Corporation
- High-throughput algorithm for multiversion concurrency control with globally synchronized time6 Oct 2026US 12,756,756 B2Google Inc.
- Dynamic memory power capping with criticality awareness29 Sep 2026US 12,748,620 B2Advanced Micro Devices, Inc.
- Synchronization of automation scripts among different computing systems29 Sep 2026US 12,748,637 B2International Business Machines Corporation
- Parallel thread synchronization8 Oct 2026US 2026/0310524 A1NVIDIA Corporation
- Application programming interface to perform a scheduling policy1 Oct 2026US 2026/0300006 A1NVIDIA Corporation
- Calculation of the parallel capacity of computer systems based on iteratively executing according to step variable1 Oct 2026US 2026/0300038 A1Sap SE
- Method and System for Controlling an Interrupt Lock of a CPU of A Vehicle Control Unit in a User Mode1 Oct 2026US 2026/0300039 A1Bayerische Motoren Werke Aktiengesellschaft
- Managing work units using a dynamic locking data structure17 Sep 2026US 2026/0277708 A1Microsoft Technology Licensing, LLC
Most cited
By later US patents
- Metadevice driver rename/exchange technique for a computer system incorporating a plurality of independent device drivers1,433US 5,802,364 ASun Microsystems, Inc. · 1998
- Metadata for managing I/O and storage for a virtualization654US 8,850,130 B1Nutanix, Inc. · 2014
- Method for synchronizing and archiving information between computer systems591US 5,710,922 AApple Computer, Inc. · 1998
- Man machine interface446US 4,570,217 A1986
- System for determining the rights of object access for a server process by combining them with the rights of the client process379US 5,321,841 ADigital Equipment Corporation · 1994