LETTS; John

Patent Applications and Registrations

Patent applications and USPTO patent grants for LETTS; John.The latest application filed is for "process for producing isocyanate-based foam construction boards".

Company Profile

2.7.11

LETTS; John - Carmel IN
Letts; John - Westfield IN

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Process For Producing Isocyanate-based Foam Construction Boards App 20220049063 - LETTS; John ; et al.	2022-02-17
Process for producing isocyanate-based foam construction boards Grant 11,174,364 - Letts , et al. November 16, 2	2021-11-16
Construction Boards With Coated Inorganic Facer App 20200011050 - LETTS; John	2020-01-09
Construction boards with coated inorganic facer Grant 10,450,741 - Letts Oc	2019-10-22
Foam Construction Boards With Expandable Graphite App 20190061313 - Yao; Chunhua ; et al.	2019-02-28
Process For Producing Isocyanate-based Foam Construction Boards App 20180355136 - Letts; John ; et al.	2018-12-13
Construction Boards With Coated Inorganic Facer App 20180320366 - Letts; John	2018-11-08
Construction boards with coated inorganic facer Grant 10,000,922 - Letts June 19, 2	2018-06-19
Insulation Devices Including Vacuum-insulated Capsules App 20170335563 - HUBBARD; Michael J. ; et al.	2017-11-23
Process For Producing Isocyanate-based Foam Construction Boards App 20170137557 - YAO; Chunhua ; et al.	2017-05-18
High density polyurethane and polyisocyanurate construction boards and composite boards Grant 9,221,234 - Letts , et al. December 29, 2	2015-12-29
High Density Polyurethane And Polyisocyanurate Construction Boards And Composite Boards App 20140011008 - LETTS; John ; et al.	2014-01-09
High density polyurethane and polyisocyanurate construction boards and composite boards Grant 8,453,390 - Letts , et al. June 4, 2	2013-06-04
High Density Polyurethane And Polyisocyanurate Construction Boards And Composite Boards App 20100031603 - Letts; John ; et al.	2010-02-11
Method and apparatus to monitor the compressive strength of insulation boards Grant 7,387,753 - Tackett , et al. June 17, 2	2008-06-17
Method and apparatus to monitor the compressive strength of insulation boards App 20050055975 - Tackett, Timothy ; et al.	2005-03-17

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