Y10T 428/21
Circular sheet or circular blank
Y10T428/21 (Circular sheet or circular blank) appears on 2,718 US grants and 1,914 published applications in this corpus.
Search patents in Y10T- Granted patents
- 2,718
- Published applications
- 1,914
- Assignees
- 1,031
- Inventors
- 4,434
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 13 | 0 |
| 1978 | 30 | 0 |
| 1979 | 10 | 0 |
| 1980 | 9 | 0 |
| 1981 | 14 | 0 |
| 1982 | 20 | 0 |
| 1983 | 16 | 0 |
| 1984 | 14 | 0 |
| 1985 | 16 | 0 |
| 1986 | 17 | 0 |
| 1987 | 11 | 0 |
| 1988 | 9 | 0 |
| 1989 | 10 | 0 |
| 1990 | 17 | 0 |
| 1991 | 17 | 0 |
| 1992 | 21 | 0 |
| 1993 | 13 | 0 |
| 1994 | 28 | 0 |
| 1995 | 26 | 0 |
| 1996 | 63 | 0 |
| 1997 | 98 | 0 |
| 1998 | 88 | 0 |
| 1999 | 126 | 0 |
| 2000 | 135 | 0 |
| 2001 | 150 | 63 |
| 2002 | 149 | 158 |
| 2003 | 164 | 183 |
| 2004 | 148 | 186 |
| 2005 | 149 | 173 |
| 2006 | 119 | 156 |
| 2007 | 65 | 123 |
| 2008 | 106 | 108 |
| 2009 | 64 | 110 |
| 2010 | 111 | 125 |
| 2011 | 102 | 112 |
| 2012 | 112 | 110 |
| 2013 | 126 | 89 |
| 2014 | 99 | 75 |
| 2015 | 56 | 69 |
| 2016 | 36 | 16 |
| 2017 | 47 | 11 |
| 2018 | 25 | 13 |
| 2019 | 15 | 11 |
| 2020 | 12 | 9 |
| 2021 | 8 | 5 |
| 2022 | 9 | 3 |
| 2023 | 3 | 3 |
| 2024 | 5 | 2 |
| 2025 | 3 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Chamfered silicon carbide substrate and method of chamfering21 Apr 2026US 12,610,792 B2SiCrystal GmbH
- Adhesive film for polishing pad, laminated polishing pad including the same and method of polishing wafer28 Oct 2025US 12,454,636 B2Enpulse Co., Ltd.
- Manufacture of a polymer seal for a wellbore downhole tool with dimensional mechanical property grading14 Oct 2025US 12,441,060 B2Halliburton Energy Services.Inc.
- Silicon carbide single crystal wafer, and methods for manufacturing silicon carbide single crystal ingot and the silicon carbide single crystal wafer18 Mar 2025US 12,252,808 B2Denso Corporation
- System for the manufacture of a dental prosthesis26 Nov 2024US 12,150,824 B2Ivoclar Vivadent AG
- Base29 May 2025US 2025/0172860 A1Delta Electronics, Inc.
- The manufacture of a polymer seal for a wellbore downhole tool with dimensional mechanical property grading9 May 2024US 2024/0149528 A1Halliburton Energy Services.Inc.
- Waterproof sound-transmitting sheet14 Mar 2024US 2024/0083135 A1Amogreentech Co., Ltd.
- Methods for manufacturing silicon carbide single crystal ingot and silicon carbide single crystal wafer23 Nov 2023US 2023/0374699 A1Denso Corporation
- System for the manufacture of a dental prosthesis20 Apr 2023US 2023/0118604 A1Ivoclar Vivadent AG
Most cited
By later US patents
- Article forming system696US 4,773,182 AHighland Supply Corporation · 1988
- Wafer holding fixture for chemical reaction processes in rapid thermal processing equipment and method for making same643US 4,978,567 AMaterials Technology Corporation, subsidiary of the Carbon/Graphite Group, Inc. · 1990
- Wafer support fixtures for rapid thermal processing533US 5,514,439 A1996
- Air gas analyzer window and a method for producing such a window494US 7,629,039 B2Phasein AB · 2009
- Controlled cleavage process and device for patterned films426US 5,985,742 ASilicon Genesis Corporation · 1999