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Official data from INPI

PROCESSO DE LIQUEFAÇÃO DE MATERIAL DE MISTURA DE MATÉRIAS PRIMAS DO VIDRO; PROCESSO DE FUSÃO DO VIDRO

ConcedidaInvention Patent

Application data

Number

PI8204333

Type

Invention Patent

Filing

07/26/1982

Publication

07/19/1983

Progress at the INPI

  1. Filing07/26/82
  2. Publication07/19/83
  3. Examination05/22/84
  4. Allowance08/11/87
  5. Grant02/23/88
  6. Terminated07/18/95

The patent was granted on 02/23/1988 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: 02/23/1988. 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. K. (pessoa física)

US

J. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

288.581 · 07/30/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/23/1988

RPI 905

Notificação para pagamento de retribuição

#13.1

12/01/1987

RPI 893

Deferimento

#9.1

08/11/1987

RPI 877

Exigência - art. 36 da LPI

#6.1

04/08/1986

RPI 807

Exigência - art. 36 da LPI

#6.1

03/05/1985

RPI 750

Solicitação de exame técnico

#4.1

05/22/1984

RPI 709

Publicação do pedido de patente

#3.1

07/19/1983

RPI 665

Pedido de patente depositado

#2.1

09/08/1982

RPI 620

Anuidade - prazo legal encerrado

#18.2

07/18/1995

RPI 1285

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