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Official data from INPI

COMPOSICAO DE REVESTIMENTO,ARTIGO REVESTIDO E PROCESSO DE REVESTIMENTO DE SUBSTRATO

ConcedidaInvention Patent

Application data

Number

PI7908875

Type

Invention Patent

Filing

10/01/1979

Publication

-

Progress at the INPI

  1. Filing10/01/79
  2. Publication
  3. Examination05/25/82
  4. Allowance07/02/85
  5. Grant02/04/86
  6. Expired05/09/95

The letters patent expired on 05/09/1995: 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: 02/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

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Inventors

C. T. (pessoa física)

V. E. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/04/1986

RPI 798

Notificação para pagamento de retribuição

#13.1

10/22/1985

RPI 783

Deferimento

#9.1

07/02/1985

RPI 767

Exigência - art. 36 da LPI

#6.1

06/12/1984

RPI 712

Republicação - classificação IPC

#15.11

02/28/1984

RPI 697

Conhecimento de parecer técnico

#7.1

10/11/1983

RPI 677

Solicitação de exame técnico

#4.1

05/25/1982

RPI 605

Carta-patente expirada

#21.1

05/09/1995

RPI 1275

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