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Official data from INPI

PROCESSO PARA FUNDIR MATERIAL DE VIDRO E SIMILARES POR COMBUSTÃO SUBMERSA EM ETAPAS

Em ExigênciaInvention Patent

Application data

Number

PI8503434

Type

Invention Patent

Filing

07/18/1985

Publication

04/15/1986

Progress at the INPI

  1. Filing07/18/85
  2. Publication04/15/86
  3. Examination05/24/88
  4. Allowance10/30/90
  5. Grant05/28/91
  6. Terminated09/19/95

The patent was granted on 05/28/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PPG Industries, Inc.

US

See this company's full portfolio

Inventors

G. P. (pessoa física)

US

H. H. (pessoa física)

US

K. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

632.506 · 07/19/1984

US

632.507 · 07/19/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

6.2

05/30/1989

RPI 971

Solicitação de exame técnico

#4.1

05/24/1988

RPI 918

Publicação do pedido de patente

#3.1

04/15/1986

RPI 808

Pedido de patente depositado

#2.1

09/24/1985

RPI 779

Anuidade - prazo legal encerrado

#18.2

09/19/1995

RPI 1294

Concessão da patente

#16.1

05/28/1991

RPI 1069

Notificação para pagamento de retribuição

#13.1

02/13/1991

RPI 1054

Deferimento

#9.1

10/30/1990

RPI 1039

Exigência - art. 36 da LPI

#6.1

05/29/1990

RPI 1020

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