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Official data from INPI

SEPARAÇÃO REOLÓGICA SELETIVA DE ARGILAS.

ConcedidaInvention Patent

Application data

Number

PI8108917

Type

Invention Patent

Filing

12/08/1981

Publication

11/30/1982

Progress at the INPI

  1. Filing12/08/81
  2. Publication11/30/82
  3. Examination06/28/83
  4. Allowance11/10/87
  5. Grant05/31/88
  6. Terminated09/25/90

The patent was granted on 05/31/1988 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. C. (pessoa física)

US

Inventors

T. [. (pessoa física)

Technical data

IPC Classification

Priority claims

US

216.652 · 12/15/1980

US

81/01628 · 12/08/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

03/01/1988

RPI 906

Deferimento

#9.1

11/10/1987

RPI 890

Exigência - art. 36 da LPI

#6.1

06/02/1987

RPI 867

Conhecimento de parecer técnico

#7.1

11/12/1985

RPI 786

Exigência - art. 36 da LPI

#6.1

12/04/1984

RPI 737

Solicitação de exame técnico

#4.1

06/28/1983

RPI 662

Notificação de entrada na fase nacional - PCT

#1.3

11/30/1982

RPI 632

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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