G02F 1/13378
By treatment of the surface
Official title: {by treatment of the surface, e.g. embossing, rubbing or light irradiation (G02F1/133711, G02F1/133734, G02F1/133753 take precedence)}
G02F1/13378 (By treatment of the surface) appears on 2,294 US grants and 2,528 published applications in this corpus.
Search patents in G02F- Granted patents
- 2,294
- Published applications
- 2,528
- Assignees
- 454
- Inventors
- 3,676
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 14 | 0 |
| 1996 | 14 | 0 |
| 1997 | 28 | 0 |
| 1998 | 52 | 0 |
| 1999 | 40 | 0 |
| 2000 | 37 | 0 |
| 2001 | 50 | 21 |
| 2002 | 29 | 58 |
| 2003 | 41 | 51 |
| 2004 | 43 | 77 |
| 2005 | 47 | 86 |
| 2006 | 56 | 89 |
| 2007 | 45 | 83 |
| 2008 | 49 | 65 |
| 2009 | 58 | 70 |
| 2010 | 67 | 88 |
| 2011 | 74 | 90 |
| 2012 | 73 | 119 |
| 2013 | 88 | 121 |
| 2014 | 108 | 144 |
| 2015 | 132 | 221 |
| 2016 | 167 | 238 |
| 2017 | 170 | 206 |
| 2018 | 167 | 155 |
| 2019 | 147 | 152 |
| 2020 | 151 | 124 |
| 2021 | 99 | 82 |
| 2022 | 76 | 48 |
| 2023 | 42 | 42 |
| 2024 | 44 | 54 |
| 2025 | 36 | 26 |
| 2026 | 19 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Liquid crystal composition and display panel29 Sep 2026US 12,747,393 B2Tcl China Star Optoelectronics Technology Co., Ltd.
- Liquid-crystal medium15 Sep 2026US 12,735,641 B2Merck Patent GmbH
- Optical laminate, polarizing plate, and image device display15 Sep 2026US 12,736,729 B2FUJIFILM Corporation
- Method of manufacturing display device1 Sep 2026US 12,724,308 B2Japan Display Inc.
- Lens unit and a display device including the same25 Aug 2026US 12,717,187 B2Samsung Display Co., Ltd.
- Preparation method and application for ferroelectric liquid crystal material grating at room temperature based on femtosecond laser direct writing1 Oct 2026US 2026/0299322 A1Nanjing University
- Liquid crystal element, production method of liquid crystal element3 Sep 2026US 2026/0259445 A1Stanley Electric Co., Ltd.
- Innovative photomobile polymer, method for preparing said photomobile polymer without rubbing, 3d printing method of said photomobile polymer and 3d printer to implement said 3d printing method20 Aug 2026US 2026/0241637 A1Consiglio Nazionale Delle Ricerche
- Liquid crystal display device13 Aug 2026US 2026/0235910 A1Sharp Display Technology Corporation
- Wide field-of-view polarization switches and methods of fabricating liquid crystal optical elements with pretilt6 Aug 2026US 2026/0227661 A1Magic Leap, Inc.
Most cited
By later US patents
- Liquid-crystal electro-optical apparatus and method of manufacturing the same383US 5,594,569 ASemiconductor Energy Laboratory Co.Ltd. · 1997
- Process of aligning and realigning liquid crystal media259US 4,974,941 AHercules Incorporated · 1990
- Optical component221US 5,602,661 AHoffmann-La Roche Inc. · 1997
- Fabrication method for liquid crystal alignment layer by magnetic field treatment201US 5,742,370 AKorea Institute of Science and Technology · 1998
- Method for forming an orientation film of photopolymer in a liquid crystal display165US 5,464,669 AGoldstar Co., Ltd. · 1995