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Official data from INPI

ARTIGO DE BAIXA EMISSIVIDADE E ALTA TRANSMITÂNCIA.

PublicadaInvention Patent

Application data

Number

PI8901510

Type

Invention Patent

Filing

03/31/1989

Publication

11/14/1989

Progress at the INPI

  1. Filing03/31/89
  2. Publication11/14/89
  3. Examination10/29/91
  4. Allowance01/05/99
  5. Grant08/10/99
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 11/14/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PPG Industries, Inc.

US

PPG Industries OHIO, INC.

US

See this company's full portfolio

Inventors

J. F. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

176.511 · 04/01/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/14/1989

RPI 995

Pedido de patente depositado

#2.1

05/16/1989

RPI 969

Carta-patente expirada

#21.1

Patente extinta em 10/08/2009

12/18/2012

RPI 2189

Transferência deferida

#25.1

Transferido de: PPG Industries, Inc.

06/21/2005

RPI 1798

Concessão da patente

#16.1

08/10/1999

RPI 1492

Deferimento

#9.1

01/05/1999

RPI 1461

Exigência - art. 36 da LPI

#6.1

08/13/1996

RPI 1341

Solicitação de exame técnico

#4.1

10/29/1991

RPI 1091

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