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Official data from INPI

PROCESSO DE REVESTIMENTO QUE USA UM REAGENTE QUE CONTEM SILICIO SUBSTITUIDO COM ALCOXI

ConcedidaInvention Patent
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Application data

Number

PI8207989

Type

Invention Patent

Filing

11/20/1981

Publication

10/04/1983
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Progress at the INPI

  1. Filing11/20/81
  2. Publication10/04/83
  3. Examination07/17/84
  4. Allowance08/11/87
  5. Grant03/29/88
  6. Expired08/19/08

The letters patent expired on 08/19/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 03/29/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GORDON ROY GERALD [US]

Inventors

G. [. (pessoa física)

Technical data

IPC Classification

B05D 1/36C03C 17/30

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/29/1988

RPI 910

Notificação para pagamento de retribuição

#13.1

12/01/1987

RPI 893

Republicação - classificação IPC

#15.11

08/18/1987

RPI 878

Deferimento

#9.1

08/11/1987

RPI 877

Exigência - art. 36 da LPI

#6.1

07/15/1986

RPI 821

Exigência - art. 36 da LPI

#6.1

11/12/1985

RPI 786

Solicitação de exame técnico

#4.1

07/17/1984

RPI 717

Notificação de entrada na fase nacional - PCT

#1.3

10/04/1983

RPI 676

Carta-patente expirada

#21.1

Patente extinta em 25/10/97

08/19/2008

RPI 1963

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