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Official data from INPI

ARTIGO DE POLICARBONATO REVESTIDO, NÃO OPACO, CONFORMADO, TENDO APERFEIÇOADO RESISTÊNCIA A ABRASÃO E A SOLVENTE QUÍMICO E PROCESSO PARA SUA PRODUÇÀO

ConcedidaInvention PatentPCT · US1979000905

Application data

Number

PI7908889

Type

Invention Patent

Filing

10/29/1979

Publication

-

PCT

US1979000905

Progress at the INPI

  1. Filing10/29/79
  2. Publication
  3. Examination06/08/82
  4. Allowance05/31/88
  5. Grant11/29/88
  6. Expired05/09/95

The letters patent expired on 05/09/1995: 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: 11/29/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

General Electric Company

US

See this company's full portfolio

Inventors

O. D. (pessoa física)

S. S. (pessoa física)

Technical data

Priority claims

US

956.874 · 11/01/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/29/1988

RPI 945

Notificação para pagamento de retribuição

#13.1

09/20/1988

RPI 935

Deferimento

#9.1

05/31/1988

RPI 919

Exigência - art. 36 da LPI

#6.1

09/29/1987

RPI 884

Solicitação de exame técnico

#4.1

06/08/1982

RPI 607

Carta-patente expirada

#21.1

05/09/1995

RPI 1275

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