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Official data from INPI

ESPUMA DE POLIURETANA ESTAVEL A OXIDACAO E PROCESSO PARA PREPARAR A MESMA

ConcedidaInvention Patent

Application data

Number

PI8002240

Type

Invention Patent

Filing

03/10/1980

Publication

-

Progress at the INPI

  1. Filing03/10/80
  2. Publication
  3. Examination09/20/83
  4. Allowance06/21/88
  5. Grant12/27/88
  6. Terminated09/25/90

The patent was granted on 12/27/1988 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: 12/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M & T CHEMICALS INC

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Inventors

B. E. (pessoa física)

T. K. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1988

RPI 949

Notificação para pagamento de retribuição

#13.1

10/25/1988

RPI 940

Deferimento

#9.1

06/21/1988

RPI 922

Exigência - art. 36 da LPI

#6.1

11/24/1987

RPI 892

14.1

12/02/1986

RPI 841

Exigência - art. 36 da LPI

#6.1

08/21/1984

RPI 722

Solicitação de exame técnico

#4.1

09/20/1983

RPI 674

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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