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Official data from INPI

FILME POLIMERO PIROELETRICO E PIEZOELETRICO ISOTROLICO ,PROCESSO PARA SUA FORMACAO ,E ARTIGO COM ELE REVESTIDO

ConcedidaInvention Patent
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Application data

Number

PI8104732

Type

Invention Patent

Filing

07/23/1980

Publication

04/13/1982
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Progress at the INPI

  1. Filing07/23/80
  2. Publication04/13/82
  3. Examination06/12/84
  4. Allowance06/14/88
  5. Grant03/28/89
  6. Terminated09/13/94

The patent was granted on 03/28/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 03/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG

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Inventors

K. D. (pessoa física)

L. N. (pessoa física)

P. C. (pessoa física)

Technical data

IPC Classification

C08L 27/16C08L 33/00C08L 33/02H01L 37/02H01L 41/18H01L 41/193

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/28/1989

RPI 962

Notificação para pagamento de retribuição

#13.1

11/16/1988

RPI 943

9.1.3

07/26/1988

RPI 927

Deferimento

#9.1

06/14/1988

RPI 921

Republicação - classificação IPC

#15.11

05/27/1986

RPI 814

Exigência - art. 36 da LPI

#6.1

05/06/1986

RPI 811

Exigência - art. 36 da LPI

#6.1

07/30/1985

RPI 771

Solicitação de exame técnico

#4.1

06/12/1984

RPI 712

Publicação do pedido de patente

#3.1

04/13/1982

RPI 599

Anuidade - prazo legal encerrado

#18.2

09/13/1994

RPI 1241

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