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Official data from INPI

MISTURA PRÉ-FORMULADA DE PARTÍCULAS COM ESCOAMENTO LIVRE, DE MODIFICADORES RESINOSOS; PASTA AQUOSA; PROCESSO PARA PRODUZIR UM DIAFRAGMA SEPARADOR PERMEÁVEL A ELETRÓLITOS; DIAFRAGMA SEPARADOR PERMEÁVEL A ELETRÓLITOS; E CÉLULA ELETROLÍTICA

Em ExigênciaInvention Patent

Application data

Number

PI8400066

Type

Invention Patent

Filing

01/06/1984

Publication

09/04/1984

Progress at the INPI

  1. Filing01/06/84
  2. Publication09/04/84
  3. Examination09/02/86
  4. Allowance11/06/90
  5. Grant11/26/91
  6. Terminated05/30/95

The patent was granted on 11/26/1991 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: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Oxytech Systems, Inc.

US

See this company's full portfolio

Inventors

L. H. (pessoa física)

US

S. T. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

461.565 · 01/27/1983

US

555.807 · 11/28/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

6.2

07/26/1988

RPI 927

14.1

01/05/1988

RPI 898

Solicitação de exame técnico

#4.1

09/02/1986

RPI 828

Publicação do pedido de patente

#3.1

09/04/1984

RPI 724

Pedido de patente depositado

#2.1

03/20/1984

RPI 700

Anuidade - prazo legal encerrado

#18.2

05/30/1995

RPI 1278

Concessão da patente

#16.1

11/26/1991

RPI 1095

14.7

06/11/1991

RPI 1071

Notificação para pagamento de retribuição

#13.1

02/19/1991

RPI 1055

Deferimento

#9.1

11/06/1990

RPI 1040

Exigência - art. 36 da LPI

#6.1

05/29/1990

RPI 1020

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