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David C. Schwartz
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Southboro, MA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Binder view pocket
Patent number
6,874,968
Issue date
Apr 5, 2005
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Two sided stickys
Patent number
6,833,172
Issue date
Dec 21, 2004
Productive Environments, Inc.
David C. Schwartz
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Integral self sectioning file folder
Patent number
6,679,418
Issue date
Jan 20, 2004
Productive Environments Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Classification file folder marker tabs
Patent number
6,543,379
Issue date
Apr 8, 2003
Productive Environments Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Morphing leaf
Patent number
6,499,903
Issue date
Dec 31, 2002
Productive Environments Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Essentially open file folder
Patent number
6,453,589
Issue date
Sep 24, 2002
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Self tabbing label and system therefore
Patent number
6,364,366
Issue date
Apr 2, 2002
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Tabbed label
Patent number
D443894
Issue date
Jun 19, 2001
Productive Environments Inc.
David C. Schwartz
D19 - Office supplies
Information
Patent Grant
Folder binder
Patent number
6,196,748
Issue date
Mar 6, 2001
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Single footprint same face tri-pocket array
Patent number
5,586,829
Issue date
Dec 24, 1996
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Leaf structure with a hinged repositional binding
Patent number
5,524,998
Issue date
Jun 11, 1996
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Cocoon pocket
Patent number
5,417,509
Issue date
May 23, 1995
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Windowing leaf structure
Patent number
5,407,231
Issue date
Apr 18, 1995
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Book cover and binding with respositionable loose leaves
Patent number
5,405,169
Issue date
Apr 11, 1995
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Hypertext book attachment
Patent number
5,380,043
Issue date
Jan 10, 1995
Productive Environments
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Hypertext book attachment
Patent number
5,316,341
Issue date
May 31, 1994
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Windowing attachment for a book
Patent number
5,165,721
Issue date
Nov 24, 1992
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Hypertext book attachment
Patent number
5,048,869
Issue date
Sep 17, 1991
Productive Environments, Inc.
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Patents Applications
last 30 patents
Information
Patent Application
CLASSIFICATION FILE FOLDER MARKER TABS
Publication number
20020134298
Publication date
Sep 26, 2002
DAVID C. SCHWARTZ
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Application
Binder view pocket
Publication number
20020089166
Publication date
Jul 11, 2002
David C. Schwartz
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER