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Official data from INPI

MISTURA DE COPOLÍMEROS DE SILOXANOS; COMPOSIÇÃO DERIVADA DAS MESMAS; PROCESSO PARA A PRODUÇÃO DE ESPUMA DE POLIURETANA E ESPUMA RESULTANTE DO PROCESSO.

ConcedidaInvention Patent

Application data

Number

PI8104106

Type

Invention Patent

Filing

06/29/1981

Publication

03/16/1982

Progress at the INPI

  1. Filing06/29/81
  2. Publication03/16/82
  3. Examination09/06/83
  4. Allowance12/16/86
  5. Grant07/28/87
  6. Terminated02/04/92

The patent was granted on 07/28/1987 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: 07/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

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Inventors

B. O. (pessoa física)

P. B. (pessoa física)

Technical data

Priority claims

US

163.974 · 06/30/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/28/1987

RPI 875

Notificação para pagamento de retribuição

#13.1

05/05/1987

RPI 863

Deferimento

#9.1

12/16/1986

RPI 843

Exigência - art. 36 da LPI

#6.1

03/12/1985

RPI 751

Exigência - art. 36 da LPI

#6.1

06/26/1984

RPI 714

Solicitação de exame técnico

#4.1

09/06/1983

RPI 672

Publicação do pedido de patente

#3.1

03/16/1982

RPI 595

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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