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Official data from INPI

COMPOSIÇÃO TERNÁRIA DE POLICARBONATO

ConcedidaInvention Patent

Application data

Number

PI8005451

Type

Invention Patent

Filing

08/27/1980

Publication

-

Progress at the INPI

  1. Filing08/27/80
  2. Publication
  3. Examination08/02/83
  4. Allowance07/19/88
  5. Grant02/28/89
  6. Expired09/26/95

The letters patent expired on 09/26/1995: 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: 02/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

General Electric Company

US

See this company's full portfolio

Inventors

P. L. (pessoa física)

Technical data

Priority claims

US

69.825 · 08/27/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/28/1989

RPI 958

Notificação para pagamento de retribuição

#13.1

11/16/1988

RPI 943

Deferimento

#9.1

07/19/1988

RPI 926

Exigência - art. 36 da LPI

#6.1

08/04/1987

RPI 876

Solicitação de exame técnico

#4.1

08/02/1983

RPI 667

Carta-patente expirada

#21.1

09/26/1995

RPI 1295

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