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Official data from INPI

ARTIGO DE POLICARBONATO CONFIGURADO NÃO OPACO E REVESTIDO, PROCESSO PARA APLICAÇÃO DE PRIMER E REVESTIMENTO DE SUBSTRATO DE POLICARBONATO

ConcedidaInvention PatentPCT · US1979000911

Application data

Number

PI7908885

Type

Invention Patent

Filing

10/29/1979

Publication

-

PCT

US1979000911

Progress at the INPI

  1. Filing10/29/79
  2. Publication
  3. Examination06/08/82
  4. Allowance09/08/87
  5. Grant04/26/88
  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: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

General Electric Company

US

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Inventors

O. D. (pessoa física)

S. S. (pessoa física)

Technical data

IPC Classification

Priority claims

US

956.809 · 11/01/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/26/1988

RPI 914

Notificação para pagamento de retribuição

#13.1

01/26/1988

RPI 901

Deferimento

#9.1

09/08/1987

RPI 881

Exigência - art. 36 da LPI

#6.1

08/07/1984

RPI 720

Conhecimento de parecer técnico

#7.1

01/24/1984

RPI 692

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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