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Official data from INPI

METODO E COMPOSICAO DE FILME PARA CONVERSAO DE LUZ EM ENERGIA ELETRICA

ConcedidaInvention Patent

Application data

Number

PI8102295

Type

Invention Patent

Filing

04/14/1981

Publication

11/30/1982

Progress at the INPI

  1. Filing04/14/81
  2. Publication11/30/82
  3. Examination08/30/83
  4. Allowance12/17/85
  5. Grant08/26/86
  6. Terminated08/30/94

The patent was granted on 08/26/1986 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: 08/26/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. L. (pessoa física)

Inventors

W. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/26/1986

RPI 827

Notificação para pagamento de retribuição

#13.1

04/22/1986

RPI 809

Deferimento

#9.1

12/17/1985

RPI 791

8.1

11/05/1985

RPI 785

Exigência - art. 36 da LPI

#6.1

04/30/1985

RPI 758

Conhecimento de parecer técnico

#7.1

08/14/1984

RPI 721

Solicitação de exame técnico

#4.1

08/30/1983

RPI 671

Publicação do pedido de patente

#3.1

11/30/1982

RPI 632

Anuidade - prazo legal encerrado

#18.2

08/30/1994

RPI 1239

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