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Official data from INPI

PROCESSO PARA O PROVIMENTO DE UM ARTIGO DE POLICARBONATO COM REVESTIMENTO UNIFORME E DURADOURO DE ORGANO-POLISILOXANO

ConcedidaInvention Patent

Application data

Number

PI8000573

Type

Invention Patent

Filing

01/24/1980

Publication

-

Progress at the INPI

  1. Filing01/24/80
  2. Publication
  3. Examination09/20/83
  4. Allowance10/04/88
  5. Grant07/25/89
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

General Electric Company

US

See this company's full portfolio

Inventors

G. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/25/1989

RPI 979

Notificação para pagamento de retribuição

#13.1

01/24/1989

RPI 953

Deferimento

#9.1

10/04/1988

RPI 937

Republicação - classificação IPC

#15.11

04/28/1987

RPI 862

Exigência - art. 36 da LPI

#6.1

11/04/1986

RPI 837

Solicitação de exame técnico

#4.1

09/20/1983

RPI 674

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C08J 7/04; C09D 3/82.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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