Micronized wood preservative formulations
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jul 15, 2014
Grant Date -
Nov 20, 2008
app pub date -
May 14, 2008
filing date -
Apr 9, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention provides wood preservative compositions comprising micronized particles. In one embodiment, the composition comprises dispersions of micronized metal or metal compounds. In another embodiment, the wood preservative composition comprises an inorganic biocide comprising a metal or metal compound and organic biocide. When the composition comprises an inorganic biocide and an organic biocide, the inorganic biocide or the organic biocide or both are present as micronized particles. When compositions of the present invention are used for preservation of wood, there is minimal leaching of the metal and biocide from the wood.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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KOPPERS PERFORMANCE CHEMICALS INC | 436 SEVENTH AVENUE PITTSBURGH PA 15219 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Leach, Robert M | Grand Island, US | 36 | 544 |
# of filed Patents : 36 Total Citations : 544 | |||
Zhang, Jun | Getzville, US | 1152 | 7034 |
# of filed Patents : 1152 Total Citations : 7034 |
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Patent Citation Ranking
- 5 Citation Count
- A01N Class
- 23.98 % this patent is cited more than
- 11 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 15, 2026 |
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

Legal Events
Date | Code | Event | Description |
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Mar 28, 2022 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Mar 28, 2022 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Feb 20, 2022 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Feb 20, 2022 |
Oct 11, 2021 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Mar 19, 2021 | AS | ASSIGNMENT | free format text: NOTICE OF GRANT OF SECURITY INTEREST IN U.S. PATENT;ASSIGNOR:QUANTUM MATERIALS, LLC;REEL/FRAME:055709/0440 Owner name: REGIONS BANK, GEORGIA Effective Date: Mar 19, 2021 |
Feb 20, 2018 | I | Issuance | |
Jan 31, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
May 03, 2017 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNOR:QUANTUM MATERIALS, LLC;REEL/FRAME:042227/0287 Owner name: REGIONS BANK, AS ADMINISTRATIVE AGENT, GEORGIA Effective Date: May 03, 2017 |
Aug 08, 2013 | P | Published | |
Oct 28, 2011 | F | Filing |

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