Stair system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Aug 23, 2016
Grant Date -
Sep 19, 2013
app pub date -
Oct 27, 2011
filing date -
Oct 27, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A stair system (20; 300) comprises: a first length-adjustable stringer (40A; 308A); a second length-adjustable stringer (40B; 308B); and a plurality of tread assemblies (148; 350) installable to the first and second stringers. The system further includes at least one handrail (268; 302A, 302B). A plurality of balusters (280A, 280B; 360, 362) are attached or attachable to the tread assemblies and handrail. The tread assemblies each have an adjustable tread pitch.
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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BECKM LLC | 131 NUT PLAINS ROAD GUILFORD CT 06437 |
International Classification(s)

- 2011 Application Filing Year
- E04F Class
- 271 Applications Filed
- 180 Patents Issued To-Date
- 66.43 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Walston, Richard D | Guilford, US | 1 | 1 |
# of filed Patents : 1 Total Citations : 1 |
Cited Art Landscape
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Patent Citation Ranking
- 0 Citation Count
- E04F Class
- 0 % this patent is cited more than
- 9 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 23, 2028 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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 12, 2022 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8 |
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Apr 01, 2017 | AS | ASSIGNMENT | free format text: CHANGE OF NAME;ASSIGNOR:MITSUBISHI RAYON CO., LTD.;REEL/FRAME:043750/0834 Owner name: MITSUBISHI CHEMICAL CORPORATION, JAPAN Effective Date: Apr 01, 2017 |
Dec 03, 2014 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Jul 29, 2014 | I | Issuance | |
Jul 09, 2014 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Nov 17, 2005 | P | Published | |
Feb 03, 2005 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TAKANO, TSUNEO;NUMATA, KIHARU;ITOU, AKIHIRO;AND OTHERS;REEL/FRAME:016791/0018 Owner name: MITSUBISHI RAYON CO., LTD., JAPAN Effective Date: Feb 03, 2005 |
Aug 20, 2003 | F | Filing | |
Aug 20, 2002 | PD | Priority Date |

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