Method of making improved polyester filaments, yarns and tows
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Sep 14, 1993
Issued Date -
N/A
app pub date -
Nov 1, 1991
filing date -
Jan 30, 1986
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Air-jet texturing with drawing, especially cold-drawing, or hot-drawing or other heat-treatments of spin-oriented crystalline polyester filaments, and particularly polyester feed yarns, that have been prepared by spinning at speeds of, e.g., 4 km/min, and have low shrinkage and no natural draw ratio in the conventional sense, provides useful technique for obtaining uniform drawn filaments of desired denier and thereby provides improved flexibility to obtain air-jet textured filaments and yarns of various denier. The resulting yarns have useful properties that are improved in certain respects.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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INVISTA NORTH AMERICA S A R L | 4417 LANCASTER PIKE INTELLECTUAL PROPERTY RECORD CENTER-722/032 WILMINGTON DE 19805 |
International Classification(s)

- 1991 Application Filing Year
- D02J Class
- 21 Applications Filed
- 11 Patents Issued To-Date
- 52.39 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Hendrix, Jr John P | Kinston, NC | 2 | 6 |
# of filed Patents : 2 Total Citations : 6 | |||
Knox, Benjamin H | Wilmington, DE | 26 | 264 |
# of filed Patents : 26 Total Citations : 264 | |||
Noe, James B | Wilmington, NC | 9 | 49 |
# of filed Patents : 9 Total Citations : 49 |
Cited Art Landscape
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Patent Citation Ranking
- 2 Citation Count
- D02J Class
- 0 % this patent is cited more than
- 32 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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Jan 28, 2021 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PEROXYCHEM LLC;REEL/FRAME:055624/0279 Owner name: EVONIK OPERATIONS GMBH, GERMANY Effective Date: Jan 28, 2021 |
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Apr 26, 2016 | I | Issuance | |
Apr 06, 2016 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Oct 21, 2015 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNOR:PEROXYCHEM LLC;REEL/FRAME:036847/0594 Owner name: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT, IL Effective Date: Oct 21, 2015 |
Feb 19, 2015 | P | Published | |
Apr 14, 2014 | F | Filing | |
Feb 24, 2014 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FMC CORPORATION;REEL/FRAME:036449/0716 Owner name: PEROXYCHEM LLC, PENNSYLVANIA Effective Date: Feb 24, 2014 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ROVISON, JOHN M., JR.;ABRAHAM, SHIBU;LYMBURNER, CHARLES J.;AND OTHERS;SIGNING DATES FROM 20100222 TO 20100401;REEL/FRAME:036449/0574 Owner name: FMC CORPORATION, PENNSYLVANIA |
Dec 02, 2008 | PD | Priority Date |

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