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Official data from INPI

PROCESSO PARA O TRATAMENTO DE RESÍDUOS PARA LÍQUIDO RESIDUAL ALCALINO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9101622

Type

Invention Patent

Filing

04/22/1991

Publication

12/10/1991

Progress at the INPI

  1. Filing04/22/91
  2. Publication12/10/91
  3. Examination06/30/92
  4. Allowance01/23/96
  5. Grant02/25/97
  6. Expired06/22/10

The letters patent expired on 06/22/2010: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/22/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Mitsubishi Nuclear Fuel Co

JP

Inventors

W. S. (pessoa física)

JP

Y. K. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

2-109487 · 04/25/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 22/04/2006

06/22/2010

RPI 2059

Concessão da patente

#16.1

02/25/1997

RPI 1369

Notificação para pagamento de retribuição

#13.1

07/09/1996

RPI 1336

Republicação - classificação IPC

#15.11

01/30/1996

RPI 1313

Deferimento

#9.1

01/23/1996

RPI 1312

Exigência - art. 36 da LPI

#6.1

06/27/1995

RPI 1282

Solicitação de exame técnico

#4.1

06/30/1992

RPI 1126

Publicação do pedido de patente

#3.1

12/10/1991

RPI 1097

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