G06F 12/1491
In a hierarchical protection system
Official title: {in a hierarchical protection system, e.g. privilege levels, memory rings}
G06F12/1491 (In a hierarchical protection system) appears on 691 US grants and 674 published applications in this corpus.
Search patents in G06F- Granted patents
- 691
- Published applications
- 674
- Assignees
- 203
- Inventors
- 1,367
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 10 | 0 |
| 1998 | 4 | 0 |
| 1999 | 9 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 6 |
| 2003 | 7 | 12 |
| 2004 | 9 | 13 |
| 2005 | 9 | 12 |
| 2006 | 18 | 18 |
| 2007 | 10 | 15 |
| 2008 | 6 | 32 |
| 2009 | 14 | 27 |
| 2010 | 16 | 12 |
| 2011 | 23 | 13 |
| 2012 | 22 | 22 |
| 2013 | 29 | 27 |
| 2014 | 33 | 26 |
| 2015 | 26 | 40 |
| 2016 | 36 | 29 |
| 2017 | 29 | 25 |
| 2018 | 30 | 28 |
| 2019 | 32 | 45 |
| 2020 | 34 | 56 |
| 2021 | 54 | 57 |
| 2022 | 38 | 29 |
| 2023 | 41 | 46 |
| 2024 | 46 | 37 |
| 2025 | 41 | 30 |
| 2026 | 18 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System, method, and computer readable medium for capability-enhanced virtualization of caches6 Oct 2026US 12,754,856 B2University of Virginia Patent Foundation
- Firmware-controlled memory binding and implicit data persistence for hardware accelerators22 Sep 2026US 12,743,372 B1NVIDIA Corporation
- Methods and apparatuses for executing GPU task in confidential compute architecture11 Aug 2026US 12,705,388 B2Alipay (Hangzhou) Information Technology Co., Ltd.
- Vehicle-mounted device, information processing method, and information processing program21 Jul 2026US 12,688,130 B2Autonetworks Technologies, Ltd.
- Memory management23 Jun 2026US 12,664,102 B2Arm Limited
- Shared memory access method and related apparatus17 Sep 2026US 2026/0277827 A1Huawei Technologies Co., Ltd.
- Systems, methods, apparatus, and articles of manufacture to enforce security through physical memory regions10 Sep 2026US 2026/0267808 A1Openchip & Software Technologies S.L.
- Unified memory protection table extension (mpte) for reduced instruction set computer (risc) devices20 Aug 2026US 2026/0244579 A1QUALCOMM Incorporated
- Virtual machine register in a computer processor9 Jul 2026US 2026/0195166 A1Micron Technology, Inc.
- Partitioned hvac controller28 May 2026US 2026/0146757 A1Belimo Holding AG
Most cited
By later US patents
- Object transferring system and method in an object based computer operating system347US 5,297,283 ADigital Equipment Corporation · 1994
- Distributed cryptographic object method278US 5,369,702 ATecSec, Inc. · 1994
- Secure processing unit systems and methods276US 7,430,585 B2Intertrust Technologies Corporation · 2008
- Controlling access to objects in a hierarchical database262US 5,878,415 ANovell, Inc. · 1999
- Hierarchical multi-processor network for memory sharing220US 4,240,143 ABurroughs Corporation · 1980