Chemical decontamination method using chelate free chemical decontamination reagent for removal of the dense radioactive oxide layer on the metal surface

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11289232
APP PUB NO 20190027263A1
SERIAL NO

16102797

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A chemical decontamination reagent containing a reducing agent, a reductive metal ion, and an inorganic acid is provided to remove a radioactive oxide layer on a metal surface. The reagent can dissolve the radioactive oxide layer on the metal surface effectively at a relatively low temperature and enables a simple process of contacting the reagent to the radioactive oxide, thus economically effective in terms of cost and time required for the process. Since the decontamination does not use a conventional organic chelating agent such as oxalic acid, but the reducing agent as a main substance, the residuals of the reducing agent remained after decontamination can be decomposed and removed with an oxidizing agent. Due to the easy decomposition with the chemical decontamination reagent, secondary wastes can be minimized and the radionuclides remained in the decontamination reagent solution can be removed effectively.

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
KOREA ATOMIC ENERGY RESEARCH INSTITUTE111 DAEDEOK-DAERO 989BEON-GIL YUSEONG-GU DAEJEON 34057 34057
KOREA HYDRO AND NUCLEAR POWER CO LTD1655 BULGUK-RO MUNMUDAEWANG-MYEON GYEONGSANGBUK-DO GYEONGJU-SI 38120

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Choi, Byung-Seon Daejeon, KR 3 3
Choi, Wangkyu Daejeon, KR 4 6
Jung, Chong-Hun Daejeon, KR 6 15
Moon, Jeikwon Daejeon, KR 7 10
Park, Jung-Sun Chungcheongbuk-do, KR 6 7
Park, Sang Yoon Daejeon, KR 59 138
Won, Hui-Jun Daejeon, KR 5 12
Yoon, In-Ho Chungcheongbuk-do, KR 11 30

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Sep 29, 2025
7.5 Year Payment $3600.00 $1800.00 $900.00 Sep 29, 2029
11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 29, 2033
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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