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Official data from INPI

MEMBRANAS DE TROCA IÔNICA EM CÉLULA ELETROLÍTICA

ConcedidaInvention Patent

Application data

Number

PI8201195

Type

Invention Patent

Filing

03/03/1982

Publication

01/18/1983

Progress at the INPI

  1. Filing03/03/82
  2. Publication01/18/83
  3. Examination04/09/85
  4. Allowance12/29/87
  5. Grant08/30/88
  6. Terminated07/18/95

The patent was granted on 08/30/1988 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: 08/30/1988. 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

B. E. (pessoa física)

US

H. B. (pessoa física)

US

M. S. (pessoa física)

US

Technical data

Priority claims

US

240.349 · 03/04/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1988

RPI 932

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Deferimento

#9.1

12/29/1987

RPI 897

Conhecimento de parecer técnico

#7.1

11/26/1985

RPI 788

Solicitação de exame técnico

#4.1

04/09/1985

RPI 755

Publicação do pedido de patente

#3.1

01/18/1983

RPI 639

Pedido de patente depositado

#2.1

04/20/1982

RPI 600

Anuidade - prazo legal encerrado

#18.2

07/18/1995

RPI 1285

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