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Official data from INPI

APERFECOAMENTO EM PROCESSO PARA A PREPARACAO DE UMA RESINA DE CLORETO DE POLIVINILA POR POLIMERIZACAO EM SUSPENSAO

ConcedidaInvention Patent
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Application data

Number

PI8006772

Type

Invention Patent

Filing

10/22/1979

Publication

-
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Progress at the INPI

  1. Filing10/22/79
  2. Publication
  3. Examination02/24/82
  4. Allowance07/17/84
  5. Grant03/26/85
  6. Terminated08/02/94

The patent was granted on 03/26/1985 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: 03/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SHINETSU CHEMICAL CO

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Inventors

H. K. (pessoa física)

I. K. (pessoa física)

K. I. (pessoa física)

T. S. (pessoa física)

Technical data

IPC Classification

C08F 114/06C08F 2/18

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/26/1985

RPI 753

Notificação para pagamento de retribuição

#13.1

11/13/1984

RPI 734

Deferimento

#9.1

07/17/1984

RPI 717

Republicação - classificação IPC

#15.11

02/28/1984

RPI 697

8.1

02/07/1984

RPI 694

Republicação - classificação IPC

#15.11

07/26/1983

RPI 666

Exigência - art. 36 da LPI

#6.1

05/17/1983

RPI 656

6.2

09/21/1982

RPI 622

Solicitação de exame técnico

#4.1

02/24/1982

RPI 592

Anuidade - prazo legal encerrado

#18.2

08/02/1994

RPI 1235

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