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Official data from INPI

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Em AnáliseInvention Patent
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Application data

Number

PI8703393

Type

Invention Patent

Filing

07/03/1987

Publication

03/22/1988
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Progress at the INPI

  1. Filing07/03/87
  2. Publication03/22/88
  3. Abandoned11/08/88
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

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Latest action published by the INPI: 11/08/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PPG Industries Inc

US

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Inventors

M. J. (pessoa física)

M. (pessoa física)

S. L. (pessoa física)

W. M. (pessoa física)

Technical data

IPC Classification

C03B 5/16

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/08/1988

RPI 942

Publicação do pedido de patente

#3.1

03/22/1988

RPI 909

Pedido de patente depositado

#2.1

09/01/1987

RPI 880

Arquivamento - Art. 36 §1° da LPI

#11.2

07/20/1993

RPI 1181

Exigência - art. 36 da LPI

#6.1

02/16/1993

RPI 1159

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