John B Letts
Inventor
Stats
- 16 US patents issued
- 54 US Applications filed
- most recent filing
This is official USPTO record data
Details
- 16 US Patents Issued
- 54 US Applications Filed
- 458 Total Citation Count
- Jun 10, 2024 Most Recent Filing
- Mar 27, 1984 Earliest Filing
Work History
| Patent Owner | Applications Filed | Year |
|---|---|---|
| BFS DIVERSIFIED PRODUCTS, LLC | 1
1 1 1 | 1998
2001 2005 2007 |
| BRIDGESTONE CORPORATION | 1
| 1998
|
| Union Carbide Corporation | 1
1 | 1984
1985 |
| BRIDGESTONE/FIRESTONE, INC. | 1
| 2001
|
| BPS DIVERSIFIED PRODUCTS, LLC | 1
| 2005
|
| SHELL OIL COMPANY | 1
| 1984
|
| FIRESTONE BUILDING PRODUCTS COMPANY, LLC | 2
2 7 2 6 1 2 3 1 1 1 | 1996
1998 2003 2006 2008 2010 2011 2012 2015 2016 2017 |
Inventor Addresses
| Address | Duration |
|---|---|
| Carmel, IN | Apr 07, 98 - Dec 27, 07 |
| Carmel, IN, US | Jul 08, 04 - Apr 01, 25 |
| Charleston, WV | Apr 19, 88 - Apr 19, 88 |
| Dunbar, WV | Dec 25, 84 - Dec 25, 84 |
Technology Profile
| Technology | Matters | |
|---|---|---|
| B29C: | SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING | 9 |
| B29K: | INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS | 4 |
| B29L: | INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES | 4 |
Patents / Publication
| Patents / Publication # | Year of Publication / Issued | Title | Citations |
|---|---|---|---|
| 12263622 | 2025 | Process for producing isocyanate-based foam construction boards | 0 |
| 2024/0327,592 | 2024 | PROCESS FOR PRODUCING ISOCYANATE-BASED FOAM CONSTRUCTION BOARDS | 0 |
| 12006414 | 2024 | Process for producing isocyanate-based foam construction boards | 0 |
| 2024/0149,551 | 2024 | FOAM CONSTRUCTION BOARDS WITH ENHANCED FIRE PERFORMANCE | 0 |
| 11913222 | 2024 | Polyisocyanurate coverboards with improved fire resistance | 0 |
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