D01D 5/253
Formation of filaments, threads, or the like: with a non-circular cross section
Official title: with a non-circular cross section; Spinnerette packs therefor (D01D5/38 takes precedence)
D01D5/253 (Formation of filaments, threads, or the like: with a non-circular cross section) appears on 525 US grants and 499 published applications in this corpus.
Search patents in D01D- Granted patents
- 525
- Published applications
- 499
- Assignees
- 269
- Inventors
- 1,261
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 11 | 0 |
| 1983 | 10 | 0 |
| 1984 | 4 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 8 | 0 |
| 1990 | 2 | 0 |
| 1991 | 7 | 0 |
| 1992 | 9 | 0 |
| 1993 | 15 | 0 |
| 1994 | 13 | 0 |
| 1995 | 16 | 0 |
| 1996 | 7 | 0 |
| 1997 | 20 | 0 |
| 1998 | 18 | 0 |
| 1999 | 25 | 0 |
| 2000 | 19 | 0 |
| 2001 | 18 | 6 |
| 2002 | 27 | 17 |
| 2003 | 18 | 27 |
| 2004 | 18 | 22 |
| 2005 | 10 | 21 |
| 2006 | 6 | 13 |
| 2007 | 3 | 10 |
| 2008 | 4 | 13 |
| 2009 | 4 | 14 |
| 2010 | 1 | 11 |
| 2011 | 3 | 16 |
| 2012 | 7 | 12 |
| 2013 | 4 | 18 |
| 2014 | 7 | 12 |
| 2015 | 9 | 34 |
| 2016 | 11 | 14 |
| 2017 | 9 | 19 |
| 2018 | 13 | 29 |
| 2019 | 9 | 24 |
| 2020 | 23 | 25 |
| 2021 | 17 | 23 |
| 2022 | 9 | 21 |
| 2023 | 18 | 25 |
| 2024 | 18 | 29 |
| 2025 | 16 | 20 |
| 2026 | 9 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polymer fibers for concrete reinforcement8 Sep 2026US 12,729,294 B2Sika Technology AG
- Bulky nonwoven fabric with enhanced compressibility and recovery18 Aug 2026US 12,708,572 B2Pfn—Gic A.S
- Extrusion apparatus for turf fiber monofilament23 Jun 2026US 12,662,754 B2Polytex Sportbelage Produktions-GmbH
- Undulated fiber for artificial turf23 Jun 2026US D1,131,040 S1Polytex Sportbelage Produktions-GmbH · Design
- Method for producing a crimped composite thread16 Jun 2026US 12,655,544 B2Oerlikon Textile GmbH & Co.KG
- Method of making polyacrylonitrile based carbon fibers and polyacrylonitrile based carbon fiber fabric24 Sep 2026US 2026/0286576 A1University of Kentucky Research Foundation
- Configured depth capillary spinneret plate and filaments formed therefrom27 Aug 2026US 2026/0250884 A1Aladdin Manufacturing Corporation
- Cellulose acetate filaments having a cross-sectional shape with a specific surface area index20 Aug 2026US 2026/0240230 A1Acetate International LLC
- Cellulose acetate filaments having a cross-sectional shape with a specific surface area index20 Aug 2026US 2026/0240231 A1Acetate International LLC
- Process for preparing a microfiber composed of microalgae living inside, and related microfiber30 Jul 2026US 2026/0218421 A1Dew S.R.L.
Most cited
By later US patents
- Filaments having trilobal or quadrilobal cross-sections405US 5,057,368 AAllied-Signal Inc. · 1991
- Oriented profile fibers308US 5,277,976 AMinnesota Mining and Manufacturing Company · 1994
- Absorbent article having blended multi-layer absorbent structure with improved integrity271US 5,460,622 AThe Procter & Gamble Company · 1995
- Absorbent article having blended multi-layer absorbent structure with improved integrity253US 5,486,167 AThe Procter & Gamble Company · 1996
- Open capillary channel structures, improved process for making capillary channel structures, and extrusion die for use therein233US 5,200,248 AThe Procter & Gamble Company · 1993