Frameless umbrella and canopy

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5421354
SERIAL NO

08082746

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A self-supporting umbrella canopy has a high strength-to-weight ratio and the ability to compactly fold flat. The umbrella canopy uses a series of collapsible, closed cross-section cells to provide its support and to provide weather protection for a person or persons below. The closed cross-section cells are attached to each other in series so that the umbrella canopy may conveniently unfurl in a radial manner. Construction of the umbrella canopy lends itself to automated processes. Due to the self-supporting nature of the collapsible, closed cross-section cells, lightweight and inexpensive waterproof materials may be used to construct the umbrella canopy.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • Assignment data not available. Check PTO

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bolton, Douglas A 310 S. Jefferson, #25C, Placentia, CA 92670 4 47

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
* 4643210 Inflatable umbrella 15 1985
* 4870983 Inflating article with integrally associated pump 11 1988
* 5103848 Sunshade umbrella 6 1990
 
HUNTER DOUGLAS INDUSTRIES B.V. (1)
* 5197526 Device for the internal shading of glass areas with a hanging means 16 1990
 
HUNTER DOUGLAS INC. (1)
* 5043039 Method of manufacture of expandable and collapsible cellular shades of sheer fabric 29 1990
 
INTERNATIONAL WINDOW FASHIONS LLC (1)
* 5188160 Honeycombed shade 21 1992
 
Desaleux; Jean (1)
* 4370993 Disposable umbrella 5 1981
 
COMFORTEX CORPORATION (1)
* 4934434 Suspension and actuation systems for specialty window shades 29 1989
 
SCHON B.V. (1)
* 5078195 Double-walled pleated curtain 26 1990
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (2)
* 5682915 Portable sun screen 5 1996
D437109 Umbrella 16 2000
 
LEIDOS, INC. (2)
* 9051918 Vertical axis wind turbine with tensile support structure having rigid or collapsible vanes 1 2011
9133815 Propeller-type double helix turbine apparatus and method 0 2011
 
FU TAI UMBRELLA WORKS, LTD. (1)
* 6302125 Simplified flat top umbrella with one-piece umbrella cloth 10 2000
* Cited By Examiner