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Official data from INPI

CÉLULA ELETROLÍTICA PARA UM SAL FUNDIDO COMPREENDENDO CLORETO DE METAL ALCALINO OU CLORETO DE METAL ALCALINO TERROSO

Em AnáliseInvention Patent
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Application data

Number

PI8600519

Type

Invention Patent

Filing

02/06/1986

Publication

12/30/1986
View on INPI

Progress at the INPI

  1. Filing02/06/86
  2. Publication12/30/86
  3. Examination04/28/87
  4. Allowance04/27/93
  5. Grant11/30/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 04/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hiroshi Ishizuka, japonês, industrial

JP

Inventors

H. I. (pessoa física)

JP

Technical data

IPC Classification

C25C 7/00

Priority claims

JP

25867/85 · 02/13/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/28/1987

RPI 862

Publicação do pedido de patente

#3.1

12/30/1986

RPI 845

Pedido de patente depositado

#2.1

07/29/1986

RPI 823

Carta-patente expirada

#21.1

Patente extinta em 06/02/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

11/30/1993

RPI 1200

Notificação para pagamento de retribuição

#13.1

08/24/1993

RPI 1186

Deferimento

#9.1

04/27/1993

RPI 1169

Exigência - art. 36 da LPI

#6.1

10/27/1992

RPI 1143

Exigência - art. 36 da LPI

#6.1

09/03/1991

RPI 1083

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