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Official data from INPI

FILME DE TRANSPARÊNCIA PARA USO EM COPIADORAS ELETROSTÁTICAS DE PAPEL COMUM

ConcedidaInvention Patent

Application data

Number

PI8305075

Type

Invention Patent

Filing

09/19/1983

Publication

05/08/1984

Progress at the INPI

  1. Filing09/19/83
  2. Publication05/08/84
  3. Examination07/29/86
  4. Allowance05/09/89
  5. Grant11/28/89
  6. Terminated04/09/96

The patent was granted on 11/28/1989 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

See this company's full portfolio

Inventors

D. W. (pessoa física)

US

D. E. (pessoa física)

US

T. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

419,721 · 09/20/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

09/05/1989

RPI 985

Deferimento

#9.1

05/09/1989

RPI 968

Exigência - art. 36 da LPI

#6.1

06/21/1988

RPI 922

Solicitação de exame técnico

#4.1

07/29/1986

RPI 823

Publicação do pedido de patente

#3.1

05/08/1984

RPI 707

Pedido de patente depositado

#2.1

11/22/1983

RPI 683

Anuidade - prazo legal encerrado

#18.2

04/09/1996

RPI 1323

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