G11C 2211/406
Refreshing of dynamic cells
G11C2211/406 (Refreshing of dynamic cells) appears on 1,275 US grants and 1,342 published applications in this corpus.
Search patents in G11C- Granted patents
- 1,275
- Published applications
- 1,342
- Assignees
- 185
- Inventors
- 1,456
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 7 |
| 2002 | 10 | 12 |
| 2003 | 16 | 30 |
| 2004 | 32 | 78 |
| 2005 | 55 | 103 |
| 2006 | 77 | 99 |
| 2007 | 102 | 101 |
| 2008 | 74 | 54 |
| 2009 | 74 | 73 |
| 2010 | 67 | 57 |
| 2011 | 62 | 50 |
| 2012 | 41 | 29 |
| 2013 | 51 | 43 |
| 2014 | 40 | 52 |
| 2015 | 54 | 50 |
| 2016 | 56 | 54 |
| 2017 | 48 | 43 |
| 2018 | 39 | 34 |
| 2019 | 54 | 60 |
| 2020 | 58 | 67 |
| 2021 | 56 | 55 |
| 2022 | 44 | 43 |
| 2023 | 43 | 44 |
| 2024 | 45 | 48 |
| 2025 | 44 | 35 |
| 2026 | 15 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11C 2211/4061Calibration or ate or cycle tuningIndexing code499
- G11C 2211/4067Refresh in standby or low power modesIndexing code403
- G11C 2211/4065Low level details of refresh operationsIndexing code237
- G11C 2211/4068Voltage or leakage in refresh operationsIndexing code217
- G11C 2211/4062Parity or ecc in refresh operationsIndexing code171
- G11C 2211/4063Interleaved refresh operationsIndexing code21
- G11C 2211/4066Pseudo-sramsIndexing code19
Recent patents
- Memory apparatus, refresh control circuit and row hammer refresh method1 Sep 2026US 12,725,648 B2Winbond Electronics Corp.
- Storage circuit with gain-cell and self-refresh unit connected between gain-cell and latch circuit25 Aug 2026US 12,718,863 B2National Tsing Hua University
- Maintenance operations in a DRAM30 Jun 2026US 12,669,945 B2Rambus Inc.
- Volatile memory, system on chip and electronic device comprising the same12 May 2026US 12,625,649 B2Samsung Electronics Co., Ltd.
- Semiconductor memory device-directed error check and scrub12 May 2026US 12,625,766 B2Micron Technology, Inc.
- Memory device with improved sensing margin and leakage immunity24 Sep 2026US 2026/0293078 A1Synopsys, Inc.
- Semiconductor memory device-directed error check and scrub17 Sep 2026US 2026/0277742 A1Micron Technology, Inc.
- Memory device having hidden refresh13 Aug 2026US 2026/0236165 A1Rambus Inc.
- Memory device performing refresh operation and operating method thereof6 Aug 2026US 2026/0229272 A1SK hynix Inc.
- Memory supporting frequency setting and operation method of memory23 Jul 2026US 2026/0212910 A1SK hynix Inc.
Most cited
By later US patents
- Data storage device and refreshing method for use with such device605US 7,170,807 B2Innovative Silicon S.A. · 2007
- Digit line comparison circuits429US 8,279,683 B2Micron Technology, Inc. · 2012
- Semiconductor memory device and method of operating same339US 7,085,156 B2Innovative Silicon S.A. · 2006
- Semiconductor memory device and method of operating same220US 7,733,693 B2Innovative Silicon ISi SA · 2010
- Memory device testing to support address-differentiated refresh rates115US 7,444,577 B2Rambus Inc. · 2008