G01M 11/39
In which light is projected from both sides of the fiber or
Official title: {in which light is projected from both sides of the fiber or waveguide end-face}
G01M11/39 (In which light is projected from both sides of the fiber or) appears on 98 US grants and 83 published applications in this corpus.
Search patents in G01M- Granted patents
- 98
- Published applications
- 83
- Assignees
- 64
- Inventors
- 196
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 3 |
| 2004 | 4 | 0 |
| 2005 | 0 | 5 |
| 2006 | 6 | 4 |
| 2007 | 2 | 3 |
| 2008 | 2 | 4 |
| 2009 | 2 | 4 |
| 2010 | 4 | 4 |
| 2011 | 5 | 3 |
| 2012 | 2 | 1 |
| 2013 | 0 | 3 |
| 2014 | 1 | 5 |
| 2015 | 5 | 1 |
| 2016 | 4 | 2 |
| 2017 | 3 | 2 |
| 2018 | 3 | 4 |
| 2019 | 5 | 2 |
| 2020 | 1 | 4 |
| 2021 | 5 | 8 |
| 2022 | 3 | 4 |
| 2023 | 3 | 8 |
| 2024 | 6 | 2 |
| 2025 | 4 | 3 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical measurement system12 May 2026US 12,624,971 B2Sintela Limited
- Locating disturbances in optical fibres24 Mar 2026US 12,587,277 B2Tampnet AS
- Optical fiber test method and optical fiber test equipment14 Oct 2025US 12,442,716 B2NTT, Inc.
- High speed bidirectional test of dual-fiber link9 Sep 2025US 12,413,299 B2Viavi Solutions Inc.
- Optical fiber measurement system, optical fiber measurement method, control arithmetic device, and program27 May 2025US 12,313,489 B2Nippon Telegraph and Telephone Corporation
- Locating disturbances in optical fibres25 Jun 2026US 2026/0180681 A1Tampnet AS
- Optical fiber characteristic measurement device and optical fiber characteristic measurement method7 May 2026US 2026/0126345 A1Yokogawa Electric Corporation
- Optical measurement system8 Jan 2026US 2026/0009659 A1Sintela Limited
- Optical time-domain reflectometer and program15 May 2025US 2025/0155320 A1Yokogawa Electric Corporation
- Inline fiber type identification8 May 2025US 2025/0146843 A1NEC Laboratories America, Inc.
Most cited
By later US patents
- Optical fiber test instrument calibrator119US 4,497,575 ATektronix, Inc. · 1985
- Optical time-domain reflectometry92US 4,823,166 AYork Limited · 1989
- Optical switching assembly for testing fiber optic device57US 6,108,074 A2000
- Sagnac interferometer based secure communication system55US 5,311,592 AMcDonnell Douglas Corporation · 1994
- Apparatus and method for testing optical fiber system components52US 6,177,985 B12001