H01P 1/225
Coaxial attenuators
Official title: {Coaxial attenuators (H01P1/23 takes precedence)}
H01P1/225 (Coaxial attenuators) appears on 34 US grants and 22 published applications in this corpus.
Search patents in H01P- Granted patents
- 34
- Published applications
- 22
- Assignees
- 20
- Inventors
- 74
- Latest grant
- 6 Feb 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 4 | 3 |
| 2020 | 3 | 2 |
| 2021 | 0 | 2 |
| 2022 | 2 | 3 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- High frequency filter6 Feb 2024US 11,894,592 B2Zeon Corporation
- High-frequency coaxial attenuator18 Jul 2023US 11,705,611 B2
- Method and apparatus for protecting electrical components from a transient electromagnetic disturbance transmitted on parallel power lines3 May 2022US 11,322,814 B2Advanced Fusion Systems LLC
- Surface wave transmission device with RF housing and methods for use therewith22 Mar 2022US 11,283,177 B2AT&T Intellectual Property I, L. P.
- Thermalization of microwave attenuators for quantum computing signal lines10 Nov 2020US 10,833,384 B2International Business Machines Corporation
- Transition between a central contact of a coaxial component and a transmission line, in particular a radio-frequency transmission line17 Oct 2024US 2024/0347888 A1
- Integrated Attenuator with Thermal Vias15 Jun 2023US 2023/0189426 A1International Business Machines Corporation
- High-frequency coxial attenuator24 Nov 2022US 2022/0376372 A1
- High frequency filter20 Oct 2022US 2022/0336938 A1Zeon Corporation
- Surface wave transmission device with rf housing and methods for use therewith23 Jun 2022US 2022/0200153 A1AT&T Intellectual Property I, L. P.
Most cited
By later US patents
- Apparatus and method for guided wave communications using an absorber243US 10,374,281 B2AT&T Intellectual Property I, L. P. · 2019
- Microwave absorber74US 4,003,840 ATDK Electronics Co., Ltd. · 1977
- Line isolation and interference shielding for a shielded conductor system32US 4,399,419 AZenith Radio Corporation · 1983
- RF Fuse19US 4,199,736 AEaton Corporation · 1980
- Attenuator with compensation of impedance errors16US 4,138,637 AWeinschel Engineering Co., Inc. · 1979