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Official data from INPI

PROCESSO PARA FAZER ESPUMAS DE POLIURETANO

ConcedidaInvention Patent

Application data

Number

PI8008650

Type

Invention Patent

Filing

10/28/1980

Publication

-

Progress at the INPI

  1. Filing10/28/80
  2. Publication
  3. Examination07/13/82
  4. Allowance02/28/84
  5. Grant09/25/84
  6. Expired11/21/95

The letters patent expired on 11/21/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BP Chemicals Limited

GB

Poliop Internbational BV

NL

See this company's full portfolio

Inventors

T. R. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

7914847 · 04/28/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Deferimento

#9.1

02/28/1984

RPI 697

Exigência - art. 36 da LPI

#6.1

08/30/1983

RPI 671

Solicitação de exame técnico

#4.1

07/13/1982

RPI 612

Carta-patente expirada

#21.1

11/21/1995

RPI 1303

Pedido de licença compulsória

#20.1

10/16/1990

RPI 1037

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