John A. Duffy
22Patents
12h-index
20Co-inventors
81Inventor score
Filing activity: Dec 4, 1979 → Oct 28, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6586006B2 | Solid delivery systems for controlled release of molecules incorporated therein and methods of making same | Emerging Cross-Sectional Technologies | 138 | Expired |
| US5676956A | Composition and method for reducing under-eye puffiness | Human Necessities | 54 | Expired |
| US5516793A | Use of ascorbic acid to reduce irritation of topically applied active ingredients | Human Necessities | 52 | Expired |
| US5643587A | Composition and method for under-eye skin lightening | Human Necessities | 37 | Expired |
| US5703122A | Ascorbic acid compositions for reducing irritation of topically applied active ingredients | Human Necessities | 22 | Expired |
| US4724138A | Preparation of a self supporting cosmetic from a pigmented powder | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5472699A | Composition and method for visibly reducing the size of skin pores | Human Necessities | 18 | Expired |
| US5415861A | Composition and method for visibly reducing the size of skin pores | Human Necessities | 16 | Expired |
| US4283324A | Nail enamel composition | Human Necessities | 15 | Expired |
| US5605933A | Retinoid conjugate compounds and methods for treating of skin aging | Chemistry; Metallurgy | 14 | Expired |
| US5569651A | Gentle anti-acne composition | Human Necessities | 13 | Expired |
| US7074420B2 | Cosmetic treatment using a new retinoid | Human Necessities | 13 | Expired |
| US7960437B2 | Skin care composition that mediates cell to cell communication | Human Necessities | 12 | Expired |
| US6020367A | Supersaturated ascorbic acid solutions | Human Necessities | 11 | Expired |
| US4758956A | System for replacing defective portions of log data | Physics | 10 | Expired |
| US4852005A | Method of computing formation dip and azimuth | Fixed Constructions | 7 | Expired |
| US4939649A | Method of correcting nonunimodality of dipmeter traces by uniquely transforming individual traces or intervals | Fixed Constructions | 5 | Expired |
| US6162450A | Uses of ascorbyl-phosphoryl-cholesterol and compositions for practicing same | Human Necessities | 4 | Expired |
| US6180670A | Retinoid conjugate compounds useful for the treatment of aging skin | Human Necessities | 4 | Expired |
| US6299889A | Stable ascorbic acid preparation for topical use | Human Necessities | 3 | Expired |
| US5863942A | Retinoid conjugate compounds useful for the treatment of aging skin | Chemistry; Metallurgy | 1 | Expired |
| US7697671B1 | Enhanced-software defined data network | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.