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Official data from INPI

PROCESSO PARA REMOVER ALUMÍNIO E SÍLICA DISSOLVIDOS DE SALMOURAS DE HALOGENETO DE METAL ALCALINO PARA USO EM CÉLULA ELETROLÍTICA

Em ExigênciaInvention Patent

Application data

Number

PI8405744

Type

Invention Patent

Filing

11/09/1984

Publication

09/17/1985

Progress at the INPI

  1. Filing11/09/84
  2. Publication09/17/85
  3. Examination10/13/87
  4. Allowance03/01/90
  5. Grant04/30/91
  6. Terminated05/14/96

The patent was granted on 04/30/1991 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: 05/23/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

O. C. (pessoa física)

US

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Inventors

P. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

552.958 · 11/18/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

05/23/1989

RPI 970

6.2

07/26/1988

RPI 927

Solicitação de exame técnico

#4.1

10/13/1987

RPI 886

Publicação do pedido de patente

#3.1

09/17/1985

RPI 778

Pedido de patente depositado

#2.1

01/29/1985

RPI 745

Anuidade - prazo legal encerrado

#18.2

05/14/1996

RPI 1328

Republicação - classificação IPC

#15.11

09/17/1991

RPI 1085

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

06/19/1990

RPI 1023

Deferimento

#9.1

03/01/1990

RPI 1007

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