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Official data from INPI

PROCESSO PARA REMOVER MATÉRIAS EXTRAÍVEIS DE RESINAS SULFÔNICAS A PARTIR DE UMA SOLUÇÃO AQUOSA DE AÇÚCAR TRATADA COM RESINA TROCADORA DE ÍONS SULFONADA

Em AnáliseInvention Patent

Application data

Number

PI8304629

Type

Invention Patent

Filing

08/26/1983

Publication

04/24/1984

Progress at the INPI

  1. Filing08/26/83
  2. Publication04/24/84
  3. Examination08/05/86
  4. Allowance09/11/90
  5. Grant03/26/91
  6. Terminated04/09/96

The patent was granted on 03/26/1991 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: 08/05/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rohm And Haas Company.

US

See this company's full portfolio

Inventors

W. F. (pessoa física)

Technical data

IPC Classification

Priority claims

US

414.173 · 09/02/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/05/1986

RPI 824

Publicação do pedido de patente

#3.1

04/24/1984

RPI 705

Pedido de patente depositado

#2.1

11/01/1983

RPI 680

Anuidade - prazo legal encerrado

#18.2

04/09/1996

RPI 1323

Concessão da patente

#16.1

03/26/1991

RPI 1060

Republicação - classificação IPC

#15.11

03/05/1991

RPI 1057

Notificação para pagamento de retribuição

#13.1

12/26/1990

RPI 1047

Deferimento

#9.1

09/11/1990

RPI 1032

Exigência - art. 36 da LPI

#6.1

04/03/1990

RPI 1012

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