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Official data from INPI

POLARIZADOR RETRO-REFLEXIDO E SISTEMA ÓTICO

ArquivadaInvention PatentPCT · US1992004271

Application data

Number

PI9206133

Type

Invention Patent

Filing

05/20/1992

Publication

11/29/1994

PCT

US1992004271

Progress at the INPI

  1. Filing05/20/92
  2. Publication11/29/94
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: examination was not requested within the 36 months following the 05/20/1992 filing, the deadline set by art. 33 of the Brazilian IP Act. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 09/05/1995. 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

M. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/714,688 · 06/13/1991

Abstract

Um polarizador retro-reflexivo (10), compreendendo filmes finos óticos revestidos sobre um material estruturado (12, 14) divide um feixe incidente de luz em componentes polarizados (18-s, 18-p) transmitindo um componente (18-p) através do polarizador e refletindo o outro (18-s) de volta à fonte.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 33 da LPI

#11.1

09/05/1995

RPI 1292

Notificação de entrada na fase nacional - PCT

#1.3

11/29/1994

RPI 1252

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