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Official data from INPI

SEPARADOR CICLÔNICO, E, PROCESSO PARA REMOVER UMA FASE MAIS LEVE DE UM VOLUME MAIOR DE FASE MAIS DENSA

Em ExigênciaInvention Patent

Application data

Number

PI8507218

Type

Invention Patent

Filing

08/02/1985

Publication

08/04/1987

Progress at the INPI

  1. Filing08/02/85
  2. Publication08/04/87
  3. Examination03/08/88
  4. Allowance01/22/91
  5. Grant08/27/91
  6. Terminated06/04/96

The patent was granted on 08/27/1991 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Conoco Specialty Products Inc

US

See this company's full portfolio

Inventors

D. C. (pessoa física)

GB

M. T. (pessoa física)

GB

Technical data

Priority claims

GB

8419771 · 08/02/1984

GB

8511149 · 05/02/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

10/24/1989

RPI 992

Solicitação de exame técnico

#4.1

03/08/1988

RPI 907

Notificação de entrada na fase nacional - PCT

#1.3

08/04/1987

RPI 876

Anuidade - prazo legal encerrado

#18.2

06/04/1996

RPI 1331

Concessão da patente

#16.1

08/27/1991

RPI 1082

Notificação para pagamento de retribuição

#13.1

05/14/1991

RPI 1067

Deferimento

#9.1

01/22/1991

RPI 1051

14.1

10/02/1990

RPI 1035

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