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Official data from INPI

PROCESSO E CÁTODO DE PRATA DE METAL EXPANDIDO PARA REDUÇÃO ELETROLÍTICA DE ÂNIONS DE POLICLOROPICOLINATO

DeferidaInvention Patent

Application data

Number

PI8402956

Type

Invention Patent

Filing

06/13/1984

Publication

01/21/1986

Progress at the INPI

  1. Filing06/13/84
  2. Publication01/21/86
  3. Examination01/26/88
  4. Allowance08/29/89
  5. Grant04/24/90
  6. Terminated05/07/96

The patent was granted on 04/24/1990 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

W. D. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

08/29/1989

RPI 984

Exigência - art. 36 da LPI

#6.1

03/28/1989

RPI 962

Solicitação de exame técnico

#4.1

01/26/1988

RPI 901

Publicação do pedido de patente

#3.1

01/21/1986

RPI 796

Pedido de patente depositado

#2.1

08/21/1984

RPI 722

Anuidade - prazo legal encerrado

#18.2

05/07/1996

RPI 1327

Republicação - classificação IPC

#15.11

08/06/1991

RPI 1079

Concessão da patente

#16.1

04/24/1990

RPI 1015

Notificação para pagamento de retribuição

#13.1

01/09/1990

RPI 1001

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